A dishwasher can make many different sounds during a normal wash cycle. Water rushing into the tub, spray arms rotating, pumps starting and stopping, detergent dispensers opening, and electronic controls changing between stages can all produce sounds that may seem unusual if you are not familiar with how the appliance operates.
One of those sounds is a clicking noise.
Sometimes clicking is completely normal. A dishwasher may make one or several clicks as its control system changes between wash, circulation, drain, rinse, or drying stages. Some models also produce a clicking sound when an electrical switching component changes position. In other situations, however, a repetitive clicking, tapping, rattling, or grinding noise can indicate something physically interfering with the spray arm or a foreign object near the pump.
The key is therefore not simply to ask, “Why is my dishwasher clicking?” but to determine when the clicking happens, where it appears to come from, how frequently it repeats, and whether the dishwasher is still cleaning and draining normally.
A click that occurs a few times when the dishwasher changes operating modes can be normal. A click that repeats continuously every time a spray arm rotates deserves closer attention. A clicking or grinding sound accompanied by poor drainage, standing water, reduced cleaning performance, or an error code may indicate a mechanical obstruction or component problem.
This comprehensive guide explains the most common reasons a dishwasher makes a clicking noise, how to identify the source, what you can safely check yourself, when the noise is normal, when it indicates a problem, and when professional service is appropriate.
Is a Clicking Noise From a Dishwasher Normal?
Yes, some clicking noises are normal.
Modern dishwashers contain electrical controls, pumps, valves, motors, detergent dispensers, and other moving or switching components. Some of these components naturally make a click when they operate.
For example, certain dishwashers produce a clicking sound when the control system changes from one part of the cycle to another. Some models may click several times as the pump changes between circulation and draining. A detergent dispenser can also make a distinct snap or click when its cover releases.
The important factor is whether the sound matches normal operation.
A brief click during a predictable stage of the cycle is generally less concerning than a new, repetitive, metallic clicking sound that continues throughout washing.
The Most Common Causes of Dishwasher Clicking
A dishwasher making a clicking noise may have one of several causes:
- Normal electronic switching
- Normal pump operation
- Detergent dispenser operation
- Spray arm hitting a dish or utensil
- A loose item inside the dishwasher
- Debris caught in the pump
- A damaged or obstructed pump impeller
- A blocked spray-arm opening
- A loose filter or pump cover
- Installation or vibration problems
- Water-inlet valve operation
- A circulation or drain-pump problem
- A foreign object in the sump
- A component beginning to wear
- A plumbing-related noise that is being transmitted through the dishwasher
The sound pattern can help narrow down the cause.
1. Normal Electronic Control Clicking
One of the simplest explanations is that the dishwasher is functioning normally.
Dishwashers use electronic controls or mechanical timers to coordinate different parts of the cycle.
As the dishwasher progresses through its program, the control system can switch between different functions.
For example, the machine may transition between:
- Filling
- Washing
- Circulating
- Draining
- Rinsing
- Heating
- Drying
Some control systems produce an audible click during these transitions.
Certain models can also produce several clicks as the pump switches between circulation and drain functions. Manufacturer guidance specifically identifies this type of clicking as normal on applicable models.
How to recognize normal control clicking
Normal control clicking is often:
- Brief
- Infrequent
- Predictable
- Associated with a change in cycle operation
- Not accompanied by poor cleaning
- Not accompanied by poor drainage
- Not getting progressively louder
If the dishwasher otherwise operates correctly, this type of clicking is usually not a reason for concern.
2. The Dishwasher Pump May Make Clicking Sounds
Dishwashers contain pumps that move water through the appliance.
Depending on the design, a dishwasher may have separate or integrated pumping functions for circulation and drainage.
The circulation system sends water through the spray arms during washing.
The drain system removes wastewater from the machine.
Because these pumps start, stop, and change operating conditions during the cycle, they can produce different sounds.
A soft hum, water movement, or occasional operational click may be normal.
However, a pump that produces a new metallic clicking, rattling, or grinding sound may require inspection.
3. The Spray Arm May Be Hitting a Dish
One of the most common causes of a repetitive dishwasher noise is something interfering with a rotating spray arm.
Spray arms rotate as pressurized water passes through their openings.
If a large utensil, pan, cutting board, plate, or other item extends into the spray-arm path, the arm can strike it as it rotates.
This often produces a repetitive:
click-click-click-click
or
tap-tap-tap-tap
sound.
Manufacturer troubleshooting guidance identifies rhythmic knocking or tapping as a common result of the spray arm hitting an item inside the dishwasher.
How to Check Whether the Spray Arm Is Causing the Clicking
Turn the dishwasher off.
Open the door.
Inspect the lower spray arm.
Look for:
- Long utensils
- Wooden spoons
- Spatulas
- Cutting boards
- Large plates
- Pots
- Pans
- Tall containers
- Items hanging below the rack
Then gently rotate the spray arm by hand.
It should be able to make a complete revolution without hitting anything.
The spray arm needs sufficient clearance to rotate freely for proper cleaning.
If it hits something, rearrange the load.
Then run the dishwasher again.
If the clicking disappears, the problem was most likely loading-related rather than a mechanical failure.
4. A Fork, Spoon, or Utensil May Be Causing the Noise
A dishwasher does not have to contain a large pot to create clicking.
A single utensil can be enough.
For example, a long-handled:
- Spoon
- Fork
- Knife
- Spatula
- Serving utensil
can extend into the path of a rotating spray arm.
Because the spray arm rotates repeatedly, the same utensil may be struck over and over.
This creates a rhythmic sound that can easily be mistaken for a damaged motor or pump.
Before considering repairs, always check the loading arrangement.
5. A Cutting Board Can Block the Spray Arm
Large cutting boards are another common source of interference.
A cutting board positioned vertically in the lower rack can extend upward into the spray-arm path.
The dishwasher may still fill and wash normally, but the spray arm can strike the board repeatedly.
This may produce a clicking or knocking sound.
It can also reduce cleaning performance because the spray arm cannot rotate correctly.
6. A Large Pot or Pan Can Cause Clicking
Large cookware can create the same problem.
A pan may be positioned at an angle that leaves insufficient clearance between the cookware and the rotating arm.
When the spray arm contacts the pan, the noise can occur once per revolution.
The solution is usually simple:
Rearrange the cookware so the spray arm has unrestricted movement.
7. The Spray Arm Itself May Be Blocked
A spray arm can also become problematic because its water openings are blocked.
Mineral deposits, food particles, detergent residue, or other debris can obstruct spray-arm holes.
Hard-water mineral buildup can accumulate on dishwasher components, including spray arms.
A blocked spray arm may rotate poorly or distribute water unevenly.
This can sometimes produce unusual sounds and can definitely affect washing performance.
How to Inspect the Spray Arm
Remove the rack if necessary.
Inspect the spray-arm openings.
Look for:
- Food particles
- Mineral deposits
- Grease
- Detergent residue
- Small pieces of plastic
- Scale
Clean the spray arm according to the dishwasher manufacturer’s instructions.
Do not enlarge the spray holes with sharp objects.
The openings are designed to produce specific water pressure and spray patterns.
8. A Foreign Object May Be Inside the Pump
If the clicking does not come from the spray arm, the next important area to consider is the pump.
Dishwasher filters catch much of the food debris that enters the machine, but small objects can sometimes reach the sump or pump area.
Possible objects include:
- Broken glass
- Small bones
- Fruit pits
- Plastic fragments
- Food packaging pieces
- Broken utensil pieces
- Labels
- Hard food particles
A foreign object can contact the pump impeller and produce clicking, rattling, or grinding sounds.
Pump obstruction is a recognized cause of unusual dishwasher noise, and manufacturer troubleshooting guidance recommends checking the pump area when loud grinding or similar sounds occur.
9. Broken Glass Is a Particularly Important Possibility
Broken glass deserves special attention.
A glass can break inside a dishwasher without immediately being obvious.
Small fragments can move toward the filter and pump area.
If a pump impeller contacts glass, the resulting sound may be:
- Clicking
- Grinding
- Rattling
- Scraping
- Crackling
Glass also creates a safety hazard during inspection.
If you suspect broken glass, do not reach blindly into the pump area with your bare hand.
Disconnect power according to the appliance manufacturer’s safety instructions before inspecting internal components, and use appropriate protection.
Some manufacturer guidance specifically warns about sharp glass fragments when accessing a blocked pump.
10. The Pump Impeller May Be Obstructed
The impeller is a rotating component within the pump.
It moves water through the dishwasher.
If something becomes trapped around the impeller, the impeller may struggle to rotate normally.
Possible symptoms include:
- Clicking
- Rattling
- Grinding
- Reduced water circulation
- Poor cleaning
- Poor drainage
- Humming without normal water movement
A steady hum combined with no proper drainage can indicate an obstruction around the drain pump or impeller.
11. The Pump Cover May Not Be Installed Correctly
Some dishwashers have a removable pump cover beneath the filter system.
If the cover has been removed during cleaning and not correctly reinstalled, it can cause problems.
A loose or incorrectly positioned cover may:
- Vibrate
- Restrict the pump
- Allow debris into the pump
- Produce unusual noise
If you recently cleaned the filter or pump area and the clicking began afterward, check whether the filter and pump components were reinstalled exactly as instructed.
Some manufacturer troubleshooting procedures specifically identify an incorrectly attached pump cover as a potential cause of pump blockage or error conditions.
12. A Loose Filter Can Create Noise
Dishwasher filters must be correctly installed.
A filter that is not seated or locked properly can vibrate during operation.
Depending on the dishwasher design, it may create:
- Clicking
- Rattling
- Buzzing
- Vibrating
- Grinding-like sounds
If you recently removed the filter for cleaning, reinstall it carefully.
Do not operate the dishwasher with a filter that is not correctly secured.
13. The Dishwasher May Be Clicking Because It Is Draining
Drain operation naturally creates sounds.
The dishwasher’s drain pump activates to remove water from the tub.
During this stage, you may hear:
- Humming
- Water rushing
- Gurgling
- Pump noise
- Short operational clicks
Some dishwasher models produce clicking when switching between circulation and drain modes.
If the clicking occurs only during a particular drain stage and the dishwasher drains completely, the sound may be normal.
14. A Drain Pump Problem Can Cause Clicking
If the clicking is accompanied by poor drainage, investigate the drain system.
Potential causes include:
- Clogged filter
- Debris in the sump
- Blocked drain hose
- Kinked drain hose
- Blocked sink connection
- Blocked air gap
- Obstructed drain pump
- Jammed impeller
Drain problems commonly originate somewhere along the water’s path out of the dishwasher.
A dishwasher that clicks but does not properly remove water deserves more attention than one that simply makes an occasional operational click.
15. Check for Standing Water
After a cycle, look inside the dishwasher.
A small amount of water may be present in some designs, particularly around the filter or sump.
However, significant water remaining in the tub can indicate a drainage problem.
If the clicking occurs while the machine attempts to drain and substantial water remains afterward, the drain system should be inspected.
Check the filter and drain path according to the manufacturer’s instructions.
16. The Drain Hose Could Be Involved
The drain hose carries wastewater away from the dishwasher.
A kink, obstruction, or incorrectly routed hose can interfere with drainage.
This can cause the pump to operate differently from normal.
A high loop or other backflow-prevention arrangement may also be required depending on the installation.
After under-sink plumbing work, inspect the hose routing.
Incorrect routing can cause drainage problems and water to return toward the dishwasher.
17. A Sink Connection Can Cause Dishwasher Noise
Many dishwashers drain into the kitchen sink plumbing or a connected waste-disposal system.
If the connection is obstructed, the dishwasher may have difficulty draining.
Depending on the plumbing configuration, an air gap or disposal connection may also become blocked.
If clicking occurs during drainage and water is not leaving the machine properly, inspect the dishwasher’s drain connection as well as the dishwasher itself.
18. A Water-Inlet Valve Can Make a Clicking Sound
Dishwashers use a water-inlet valve to control water entering the appliance.
When the valve opens or closes, it may make a brief clicking or snapping sound.
A short click associated with the beginning of filling can therefore be normal.
However, a valve that repeatedly clicks without filling correctly may require investigation.
Look for accompanying symptoms such as:
- Dishwasher not filling
- Slow filling
- Repeated clicking
- Water-flow problems
- Error codes
- Cycle interruptions
If the machine is clicking but not receiving water correctly, the problem may not be related to the pump at all.
19. Water Hammer Can Sound Like Clicking or Banging
Plumbing can transmit noises through the dishwasher.
A sudden change in water flow can create a plumbing phenomenon commonly called water hammer.
Instead of sounding like a mechanical click inside the dishwasher, it may sound more like:
- Knock
- Bang
- Clunk
- Sharp tap
- Pipe vibration
If the sound appears when the dishwasher’s water valve closes or opens and seems to come from the plumbing rather than the appliance, the water supply system may need inspection.
Persistent water-hammer problems are generally better addressed by a qualified plumber.
20. The Dishwasher May Be Vibrating Against Cabinetry
Not every dishwasher noise originates inside the machine.
Dishwashers are installed inside cabinets, and vibration can transfer through the appliance and surrounding structure.
If the dishwasher is not level or properly secured, normal operating sounds can become noticeably louder.
Installation guidance emphasizes correct leveling and secure mounting because these factors affect vibration and perceived noise.
If the dishwasher has recently been installed, moved, or repaired, installation should be considered.
21. A Loose Mounting Bracket Can Create Clicking
An integrated dishwasher is normally secured to surrounding cabinetry or an appropriate mounting structure.
If the mounting system is loose, the appliance may move slightly during pump operation.
That movement can produce:
- Clicking
- Tapping
- Vibrating
- Rattling
Inspecting mounting hardware can help identify this type of issue, but access and procedures vary by installation.
Do not remove structural or electrical components unless you know the appropriate procedure.
22. Insulation and the Toe-Kick Panel Matter
Modern dishwashers often include insulation and exterior panels designed to reduce noise.
If a panel is loose or insulation has shifted, normal mechanical sounds may become more noticeable.
A dishwasher that suddenly becomes louder after cabinet work should therefore be inspected for loose panels or installation changes.
23. The Dishwasher Is New and Makes a Clicking Sound
A new dishwasher can make sounds that are unfamiliar to its owner.
New machines may have different pumps, motors, control systems, and sound insulation from older models.
A click that occurs predictably during cycle transitions can be normal.
If the dishwasher is newly installed and the clicking is accompanied by poor performance, leakage, error codes, or unusual grinding, however, it should be checked under the installation or warranty provisions rather than ignored.
24. A Dishwasher That Has Been Unused for a Long Time Can Make Noise
A dishwasher that has not been used for an extended period may initially produce unusual pump sounds.
Manufacturer guidance notes that a dishwasher that has been unused for some time can experience pump noise because there may not initially be sufficient water around pump seals.
This is different from a persistent clicking noise caused by a foreign object.
If the unusual sound disappears once the machine has completed a normal cycle, it may not indicate a serious fault.
25. Why the Timing of the Clicking Matters
One of the best diagnostic tools is simply paying attention to when the sound occurs.
Clicking immediately after pressing Start
Possible causes include:
- Door/latch operation
- Control switching
- Water-inlet valve
- Normal electronic operation
Clicking during washing
Possible causes include:
- Spray arm contacting dishes
- Foreign object
- Pump issue
- Loose item
Clicking during draining
Possible causes include:
- Normal pump switching
- Drain pump obstruction
- Drain-path problem
Clicking during drying
Possible causes may include:
- Fan operation
- Control switching
- Vent or related components
Clicking throughout the entire cycle
More attention is warranted, particularly if the sound is new or accompanied by performance problems.
How to Diagnose a Clicking Dishwasher Safely
You do not need to dismantle the dishwasher immediately.
Start with simple observations.
Step 1: Determine whether the noise is rhythmic
A repetitive sound that occurs at regular intervals is often associated with something rotating.
That makes the spray arm an important first suspect.
Step 2: Check the load
Look for anything extending into the spray-arm path.
Step 3: Rotate the spray arm manually
With the dishwasher off, gently rotate the arm.
It should move freely.
Step 4: Check the filter
Remove and clean it according to the manufacturer’s instructions.
Step 5: Look for visible debris
Inspect the sump area without reaching into potentially sharp or dangerous areas.
Step 6: Check drainage
After a cycle, determine whether water drains normally.
Step 7: Listen to the timing
Determine whether the noise occurs during fill, wash, drain, or drying.
Step 8: Check for error codes
Record any code before resetting the dishwasher.
How to Fix a Dishwasher Clicking From the Spray Arm
If the spray arm is hitting something, the fix is usually straightforward.
Rearrange the dishes
Keep tall objects away from the spray-arm path.
Secure lightweight items
Prevent cups and utensils from moving into the arm’s path.
Check all racks
An upper-rack item can sometimes extend downward far enough to interfere with the lower spray arm.
Rotate the arm
After loading, manually rotate the spray arm to confirm clearance.
Manufacturer guidance recommends ensuring that spray arms can rotate freely for proper cleaning.
How to Clean a Clicking Dishwasher Pump
If the manufacturer provides access to the pump through the filter area, follow the exact instructions for your model.
A typical process may involve:
- Turning the dishwasher off
- Disconnecting power when required
- Removing the lower rack
- Removing the filter
- Accessing the pump cover if designed for user access
- Inspecting for debris
- Removing visible foreign objects safely
- Checking that the pump cover is correctly positioned
- Reinstalling the filter
- Testing the dishwasher
Do not assume every dishwasher has the same pump-access procedure.
Some machines have easily accessible pump areas; others require professional disassembly.
Be Careful When Inspecting the Pump
The pump area can contain sharp objects.
Broken glass is a particular concern.
Never put your bare fingers into an unseen pump cavity simply because you hear clicking.
Disconnect power according to the manufacturer’s instructions and use appropriate protective equipment if the manual permits user inspection.
If the pump cannot be safely accessed, call a qualified appliance technician.
Should You Run the Dishwasher Empty to Diagnose Clicking?
A controlled empty test can sometimes help distinguish a loading problem from an appliance problem.
If the dishwasher clicks when full but not when empty, an item in the load may be interfering with a spray arm or moving during washing.
Manufacturer troubleshooting guidance similarly suggests that running a dishwasher without dishes can help determine whether rattling originates from the load.
However, an empty cycle is not a substitute for proper troubleshooting.
Do not repeatedly run unnecessary cycles simply to investigate a noise.
Why a Clicking Noise Can Be Accompanied by Poor Cleaning
Suppose the dishwasher is clicking repeatedly and the dishes are also coming out dirty.
That combination is significant.
A spray arm that cannot rotate freely may not distribute water correctly.
A blocked spray arm or pump can also affect water circulation.
Manufacturer guidance notes that blocked spray arms can interfere with cleaning performance.
Therefore, clicking plus poor cleaning is more suspicious than clicking alone.
Clicking Plus Poor Drainage: What It Means
If the dishwasher clicks and leaves significant water behind, focus on the drain system.
Check:
- Filter
- Sump
- Drain hose
- Sink connection
- Air gap, if installed
- Disposal connection, where applicable
- Drain pump
A steady humming sound without normal water movement can indicate a pump obstruction.
Clicking Plus a Grinding Sound
A clicking sound combined with grinding deserves more attention.
Possible causes include:
- Hard debris in the pump
- Broken glass
- Damaged impeller
- Foreign object
- Pump wear
If the sound is loud, new, or getting worse, stop unnecessary use until the cause is identified.
A pump that continues operating against a hard obstruction may sustain additional damage.
Clicking Plus a Water Leak
A clicking sound accompanied by a leak should not be ignored.
Potential causes could involve:
- Pump area
- Hose connection
- Valve
- Seal
- Sump
- Door area
Turn off the dishwasher and address the water supply and electrical safety according to the manufacturer’s instructions.
If water is reaching electrical components or the source cannot be identified, professional service is appropriate.
Clicking Plus an Error Code
If clicking occurs alongside an error code, do not diagnose the noise in isolation.
The error code may provide important information about:
- Drainage
- Filling
- Heating
- Circulation
- Door operation
- Sensors
- Control systems
Write down the exact code.
Consult the manual for the specific dishwasher model.
Avoid repeatedly resetting the appliance without identifying the underlying problem.
Dishwasher Clicking During Drain: Normal or Not?
It can be either.
Some dishwashers naturally click when switching pump functions.
Other clicking sounds during drainage can result from an obstruction.
The best clues are:
Normal:
- Brief
- Predictable
- Dishwasher drains completely
- No unusual vibration
- No error code
Potential problem:
- Loud
- Repetitive
- New
- Accompanied by standing water
- Grinding or rattling
- Drain pump struggles
- Error code appears
Dishwasher Clicking During the Wash Cycle
If clicking begins immediately when water starts spraying, inspect the spray arms first.
The spray arm should rotate freely.
Check for:
- Large utensils
- Cutting boards
- Pots
- Pans
- Long-handled tools
- Loose dishes
A repetitive tap occurring at a fixed interval is particularly suggestive of rotating contact.
Dishwasher Clicking Only Once
A single click can be completely normal.
Possible explanations include:
- Control switching
- Valve operation
- Detergent dispenser release
- Pump transition
- Door mechanism
A single isolated click is much less concerning than continuous clicking.
Dishwasher Clicking Every Few Seconds
Regular clicking every few seconds deserves investigation.
If the interval corresponds to spray-arm rotation, inspect the load.
If the sound occurs during drainage, inspect the drain system.
If it occurs during control transitions and then stops, it may be normal.
The timing pattern is therefore more useful than the volume alone.
Dishwasher Clicking When It Is Off
A dishwasher that clicks while completely powered down is different from one that clicks during a cycle.
Possible explanations may include:
- Electrical switching
- Plumbing movement
- Water pressure changes
- Thermal expansion
- Control behavior depending on the model
If a dishwasher makes repeated electrical clicking while supposedly off, especially if accompanied by a burning smell, heat, smoke, or other electrical symptoms, discontinue use and have it inspected.
Do not repeatedly cycle power to an appliance showing signs of electrical malfunction.
Why Temperature Changes Can Create Sounds
Dishwashers heat water and internal components.
Materials expand as they warm and contract as they cool.
This can sometimes produce occasional:
- Tick
- Click
- Pop
- Snap
Such sounds may be more noticeable during or after a hot cycle.
An occasional thermal sound without any performance problem is not necessarily a fault.
Why Dishwasher Noise Can Seem Louder in Some Kitchens
The same dishwasher can sound different depending on installation.
A dishwasher installed between cabinets may have more sound absorption than one exposed at the end of a cabinet run.
Hard surfaces can reflect sound.
Cabinet panels can transmit vibration.
If the machine is not level or securely mounted, the surrounding structure may amplify otherwise normal operating sounds.
How Water Hardness Can Contribute to Dishwasher Noise
Hard water can cause mineral deposits inside the appliance.
Over time, scale can accumulate on components such as:
- Spray arms
- Water passages
- Heating components
- Internal surfaces
Severe mineral deposits can affect water flow and dishwasher performance.
If clicking occurs alongside poor spray performance and visible scale, mineral buildup may be part of the problem.
Can a Dirty Filter Cause Clicking?
A dirty filter is not automatically a clicking-noise cause, but it can contribute to water-flow and drainage problems.
Food debris that accumulates around the filter and sump can eventually restrict flow.
A pump working against restricted flow may sound different.
Regular filter cleaning is therefore an important preventive measure.
How Often Should a Dishwasher Filter Be Cleaned?
There is no universal interval for every dishwasher.
Cleaning frequency should reflect:
- How often the dishwasher is used
- How heavily soiled the dishes are
- Amount of food debris
- Manufacturer recommendations
A busy household or office kitchen may need more frequent cleaning than a lightly used machine.
Keeping the filter clean helps support proper water circulation and drainage.
How to Prevent Dishwasher Clicking Noises
Prevention begins with correct loading and routine maintenance.
Load dishes carefully
Keep items away from spray arms.
Check spray-arm clearance
Rotate the arms by hand after loading.
Clean filters
Prevent debris from reaching the pump.
Inspect spray arms
Remove buildup and debris.
Avoid putting loose hard objects in the dishwasher
Small objects can migrate toward the pump.
Keep the dishwasher level
Correct installation reduces vibration.
Maintain the drain path
Keep hoses and connections clear.
Use the correct detergent
Follow the manufacturer’s recommended chemical type and dosage.
Address hard-water buildup
Use appropriate water treatment and descaling procedures where necessary.
When Should You Stop Using a Clicking Dishwasher?
Stop using the dishwasher and seek professional help if the clicking is accompanied by:
- Burning smell
- Smoke
- Electrical arcing
- Water leakage
- Loud grinding
- Severe vibration
- Failure to drain
- Failure to fill
- Repeated error codes
- Motor failure
- A suspected damaged pump
- Broken glass in an inaccessible pump area
A dishwasher is an electrical appliance connected to water and drainage.
If the fault involves electrical components or internal mechanical parts that cannot be safely accessed, professional diagnosis is the safer option.
When Can You Safely Continue Using the Dishwasher?
It may be reasonable to continue normal use when:
- The click is brief and predictable
- It occurs during a normal cycle transition
- The dishwasher cleans correctly
- It drains correctly
- There are no leaks
- There are no error codes
- There is no burning smell
- The noise has not changed or worsened
Even then, monitor the sound.
A new noise should not automatically be dismissed as normal simply because the dishwasher continues working.
Do You Need a Dishwasher Repair Technician?
Not necessarily.
Simple loading problems can usually be corrected without professional service.
Filter cleaning and basic inspection may also be appropriate if the manufacturer’s instructions permit it.
Professional service becomes more appropriate when the suspected problem involves:
- Pump failure
- Motor failure
- Electrical controls
- Wiring
- Internal valve problems
- Damaged impeller
- Persistent drainage problems
- Internal leaks
- Unclear error codes
- Components requiring disassembly
How Dishwasher Clicking Problems Differ in the UK, USA and Canada
The fundamental causes of dishwasher clicking are broadly similar in the UK, USA, and Canada.
A spray arm can hit a utensil in any country.
A pump can become obstructed anywhere.
A control system can make a normal switching sound regardless of location.
However, installation standards, electrical systems, plumbing arrangements, water hardness, dishwasher models, and manufacturer-specific instructions can differ.
For this reason, troubleshooting should always follow the manual for the exact appliance.
Do not assume that a repair procedure appropriate for one country or model applies to another.
UK Dishwasher Considerations
UK homes and offices commonly use integrated dishwashers and compact appliances with model-specific installation arrangements.
Some machines use different electrical connections, plumbing configurations, or installation methods than North American models.
If a dishwasher requires electrical or plumbing work, use an appropriately qualified professional.
For a simple clicking noise caused by loading, however, the first troubleshooting step remains the same: check that the spray arms can rotate freely.
USA Dishwasher Considerations
U.S. dishwashers vary widely in design and installation.
Some are connected to a sink disposal system, while others use different drainage arrangements.
A blocked disposal connection, drain hose, air gap, or pump can affect drainage-related noises.
Always follow the specific model’s installation and troubleshooting instructions.
Canada Dishwasher Considerations
Canadian dishwasher installations can similarly vary by model and plumbing arrangement.
Water hardness also differs significantly between municipalities.
If clicking occurs alongside mineral deposits, poor spray performance, or drainage problems, both the dishwasher and water supply conditions may deserve consideration.
A Simple Dishwasher Clicking Noise Checklist
Use this checklist before arranging service.
Loading
- Are any utensils touching the spray arm?
- Is a cutting board blocking the arm?
- Is a large pan extending into its path?
- Can every spray arm rotate freely?
Filter and pump
- Is the filter clean?
- Was the filter recently removed?
- Is the filter correctly locked?
- Is there visible debris around the sump?
- Is there evidence of broken glass?
Drainage
- Does water drain completely?
- Is the drain hose kinked?
- Is the sink connection clear?
- Is an air gap blocked, if installed?
Operation
- Does the clicking happen during filling?
- Does it occur during washing?
- Does it happen during draining?
- Does it happen during drying?
- Does it occur only during cycle transitions?
Safety
- Is there a burning smell?
- Is there water leaking?
- Is there smoke?
- Is there severe vibration?
- Is there an error code?
If the answers point toward a simple loading or filter problem, begin there.
If they indicate an internal component problem, professional service may be appropriate.
Quick Diagnosis by Sound Pattern
One or two clicks during cycle changes
Likely: Normal control operation.
Repeated clicking at regular intervals during washing
Likely: Spray arm contacting an item.
Clicking plus rattling during drainage
Possible: Debris or obstruction in the pump.
Clicking plus grinding
Possible: Foreign object or pump/impeller problem.
Clicking plus standing water
Possible: Drainage problem.
Clicking plus poor cleaning
Possible: Spray-arm obstruction, circulation issue, or water-flow problem.
Clicking plus water leak
Potentially serious: Stop and investigate safely.
Clicking with burning smell
Potentially serious electrical problem: Stop using the appliance and arrange professional inspection.
Frequently Asked Questions
Why is my dishwasher making a clicking noise?
A dishwasher can click because of normal electronic switching, pump operation, the detergent dispenser, or a water-inlet valve. A repetitive clicking noise can also occur when a spray arm hits a dish or utensil or when debris interferes with a pump.
Is clicking from a dishwasher normal?
Sometimes. Brief clicking associated with cycle changes or pump switching can be normal. Repetitive mechanical clicking that is new or accompanied by poor performance should be investigated.
Why does my dishwasher click during the wash cycle?
The most common simple cause is an object interfering with a rotating spray arm. Check large utensils, cutting boards, pans, and other items that may extend into the arm’s path.
Why does my dishwasher make a clicking sound every few seconds?
If the clicking is rhythmic during washing, check whether the spray arm is hitting something once per revolution. If it occurs during draining, the pump or drain system may need inspection.
Why is my dishwasher clicking but not washing properly?
A blocked spray arm, restricted water flow, pump obstruction, or circulation problem can affect both noise and cleaning performance.
Why is my dishwasher clicking and not draining?
A blocked filter, sump, drain hose, sink connection, or drain pump may be responsible. A steady hum without water movement can be a clue that the pump or impeller is obstructed.
Why does my dishwasher click when it drains?
Some dishwashers naturally make clicks when switching between circulation and drain functions. If the dishwasher drains normally and the sound is brief, it may be normal.
Why is my dishwasher making a clicking and grinding noise?
A foreign object such as hard food debris or broken glass may be interfering with the pump or impeller. A loud grinding sound should not be ignored.
Can a fork cause a dishwasher to click?
Yes. A long fork or other utensil can extend into the spray-arm path and be struck repeatedly as the arm rotates.
Can a pan cause clicking in a dishwasher?
Yes. A large pan or pot can interfere with the rotating spray arm and create repetitive tapping or clicking.
How do I know if the spray arm is causing the noise?
Turn the dishwasher off, open the door, and gently rotate the spray arm by hand. It should complete a full rotation without contacting dishes or other components.
Can a dirty dishwasher filter cause noise?
A dirty filter can contribute to restricted water flow and drainage problems. It can also allow debris to accumulate in the sump area, potentially contributing to pump-related noise.
Can broken glass make a dishwasher click?
Yes. Broken glass can enter the pump area and contact the impeller, producing clicking, rattling, or grinding. Use extreme caution when inspecting the pump because glass can cause serious cuts.
Why does my dishwasher click when it is filling?
A brief click can come from the water-inlet valve opening or closing. If the machine repeatedly clicks without filling correctly, investigate the water supply and valve system.
Why does my dishwasher click after I press Start?
Some models make normal clicks as the control system begins the cycle and activates components. If the dishwasher then fills and operates normally, the sound may not indicate a fault.
Why does my dishwasher click several times during one cycle?
Some dishwasher models intentionally produce several clicks when changing between circulation and drain operation. This can be normal.
Why is my new dishwasher clicking?
New dishwashers can have operating sounds that differ from older machines. Brief clicking during normal cycle transitions can be expected. A loud or persistent mechanical noise, especially with poor performance, should be checked.
Why is my dishwasher clicking after sitting unused?
A dishwasher that has not been operated for an extended period can sometimes produce unusual pump noises when restarted. Some manufacturer guidance notes that initial pump noise can occur when water has not yet reached pump seals.
Can hard water cause dishwasher clicking?
Hard-water deposits can build up on spray arms and internal components and affect water flow. If clicking is accompanied by visible mineral deposits or reduced spray performance, water hardness may be contributing to the problem.
Can limescale block dishwasher spray arms?
Yes. Mineral deposits can accumulate around spray-arm openings and interfere with water flow and operation.
Should I run my dishwasher empty to find the clicking noise?
A controlled empty test can help determine whether dishes or utensils are causing the noise. If the sound disappears when the dishwasher is empty, the loading arrangement may be responsible.
Is a dishwasher clicking noise dangerous?
Not necessarily. Normal control or pump clicking is harmless. However, clicking accompanied by burning smells, smoke, electrical symptoms, leaks, severe grinding, or major mechanical problems should be treated seriously.
Should I unplug my dishwasher if it is clicking?
If the clicking is accompanied by an electrical smell, smoke, sparking, water near electrical components, or another safety concern, stop using the appliance and disconnect power according to the manufacturer’s safety instructions. For an ordinary operational click with no other symptoms, immediate power disconnection may not be necessary.
Can a loose dishwasher filter cause clicking?
Yes. If a filter is not seated or locked correctly, it can vibrate or interfere with components. This is particularly worth checking if the noise started after filter cleaning.
Can the dishwasher pump make a clicking sound?
Yes. Pump operation and switching between circulation and drainage can produce normal sounds on some machines. Abnormal clicking or grinding may indicate an obstruction or mechanical problem.
Why does my dishwasher click but still work normally?
If the dishwasher cleans, drains, fills, heats, and dries normally, and the clicking occurs only at predictable points in the cycle, it may simply be a normal operating sound.
When should I call a dishwasher technician?
Arrange professional service if the clicking persists after checking the load and accessible maintenance areas, or if it is accompanied by poor drainage, poor cleaning, leaks, error codes, grinding, electrical symptoms, or suspected internal component failure.
Can I fix a clicking dishwasher myself?
Simple causes such as an obstructed spray arm, incorrectly loaded dishes, or a dirty filter may be safe to address according to the manufacturer’s instructions. Internal pump, motor, electrical, or control problems are better handled by a qualified technician.
Why does my dishwasher make a clicking noise after cleaning the filter?
If the noise started immediately after filter cleaning, verify that the filter and any pump cover were reinstalled correctly. An incorrectly positioned pump cover or filter can contribute to pump problems or abnormal operation.
Why is my dishwasher clicking and vibrating?
A loose installation, unbalanced appliance, improperly secured load, or pump problem can cause vibration. Check the dish load first, followed by installation and mechanical components.
Can cabinet installation make dishwasher clicking louder?
Yes. Dishwasher vibration can transfer into surrounding cabinetry. Improper leveling or mounting can make normal operating sounds more noticeable.
Is a rhythmic tapping the same as clicking?
They can have similar causes. A repetitive tapping or knocking sound is particularly associated with a spray arm contacting something inside the dishwasher.
What is the easiest fix for a clicking dishwasher?
First check the spray arms and rearrange the dishes so the arms can rotate freely. This is one of the simplest and most common causes of repetitive dishwasher noise.
What if the clicking continues after rearranging the dishes?
Clean the filter according to the manufacturer’s instructions and inspect accessible areas for debris. If the noise persists, determine whether it occurs during filling, washing, draining, or drying. Continued clicking may require professional diagnosis.
What is the most serious cause of dishwasher clicking?
There is no single “most serious” cause, but electrical faults, damaged pumps, severe mechanical obstructions, internal leaks, and foreign objects such as broken glass can require prompt attention.
Can a dishwasher click because of its control board?
The control system can intentionally produce clicking as it switches functions. If the sound is accompanied by incorrect cycle behavior, repeated resets, error codes, or failure to operate, the control system may require diagnosis.
Why does my dishwasher click only during certain cycles?
Different cycles activate components differently. A clicking sound may occur only when a particular pump, valve, dispenser, heater, fan, or control function operates.
Does every dishwasher sound the same?
No. Dishwasher designs vary substantially. Different pumps, motors, control systems, insulation, racks, spray arms, and installation arrangements produce different normal sounds.
Final Thoughts
A clicking dishwasher is not automatically a broken dishwasher.
In many cases, the sound is simply part of normal operation. Electronic controls can click when switching functions, pumps can make operational sounds, and detergent dispensers can snap open.
However, a repetitive clicking or tapping sound during washing should immediately make you check the spray-arm clearance. A fork, spoon, cutting board, pan, or another item can interfere with the arm and produce a rhythmic noise. The spray arm should always be able to rotate freely.
If the noise occurs during drainage, pay closer attention to the filter, sump, drain hose, pump, and sink connection. A pump obstruction can cause abnormal sounds and drainage problems.
If the sound is accompanied by grinding, broken glass, severe vibration, leakage, an error code, burning smell, or electrical symptoms, do not continue using the dishwasher simply because it still appears to work.
The most effective approach is to diagnose the sound based on timing, rhythm, location, and accompanying symptoms.
Start with the simplest possibilities:
Check the load.
Check the spray arms.
Check the filter.
Check for visible debris.
Check drainage.
Listen for when the sound occurs.
If those checks do not identify the cause, the problem may involve an internal pump, motor, valve, control component, or another part that requires professional service.
Ultimately, the goal is not merely to make the dishwasher quieter. It is to determine whether the clicking represents normal operation or an early warning of a problem. Addressing abnormal sounds early can help prevent a small obstruction or maintenance issue from becoming a more expensive repair.
