Why Is My Bosch Dishwasher Red Light Blinking: Troubleshooting and Solutions

Modern dishwashers have simplified our lives by providing efficient cleaning for our dishes. However, encountering issues like a blinking red light on your Bosch dishwasher can be frustrating. In this article, we will delve into the reasons behind the blinking red light and provide you with effective troubleshooting steps to resolve the issue.

Understanding the Blinking Red Light

The blinking red light on your Bosch dishwasher is an indicator that something is amiss. It’s the appliance’s way of communicating that a problem requires your attention. Addressing the issue promptly can prevent more extensive damage and ensure your dishwasher’s optimal performance.

Possible Reasons for the Blinking Red Light

Power Supply Issues

One common reason for the blinking red light is a power supply problem. Check if the dishwasher is properly plugged in and if the circuit breaker hasn’t tripped.

Door Not Properly Closed

If the door of your dishwasher isn’t closed securely, the red light might start blinking. The appliance has a safety mechanism to prevent operation with an open door.

Water Supply Problems

A lack of water supply can trigger the blinking light. Make sure the water inlet valve is fully open, and there are no kinks in the water supply hose.

Drainage Obstructions

A clogged drainage system can lead to improper functioning and cause the red light to blink. Inspect and clear any blockages in the drainage hose and filters.

Troubleshooting Steps to Fix the Issue

Checking the Power Supply

Ensure that the dishwasher is properly connected to a power source. If the outlet and circuit breaker are functioning correctly, move on to other potential causes.

Ensuring the Door is Securely Closed

Gently close the dishwasher door, making sure it latches securely. The blinking light should stop if this was the issue.

Verifying the Water Supply

Check the water inlet valve to ensure it’s fully open. Examine the water supply hose for any bends or kinks that might be obstructing water flow.

Clearing Drainage Blockages

Inspect the drainage hose, filters, and drain pump for blockages. Clean them thoroughly to restore proper drainage and resolve the blinking light.

Maintenance Tips to Prevent Recurrence

Regular Cleaning of Filters

Cleaning the filters periodically prevents debris buildup and ensures efficient dishwasher performance.

Using the Right Detergent

Using the recommended dishwasher detergent prevents excessive suds that could lead to drainage problems.

Loading Dishes Properly

Loading dishes according to the manufacturer’s guidelines prevents obstructed water flow and ensures even cleaning.

When to Seek Professional Help

If the blinking red light persists despite your troubleshooting efforts, it’s advisable to seek professional assistance. Trained technicians can diagnose and repair complex issues effectively.


A blinking red light on your Bosch dishwasher can be a minor annoyance or a sign of a more significant problem. By understanding the potential causes and following the troubleshooting steps outlined in this article, you can restore your dishwasher’s functionality and enjoy clean dishes once again.


Q: How often should I clean the dishwasher’s filters?

A: It’s recommended to clean the filters every two to three months to maintain optimal performance.

Q: Can using the wrong detergent cause the blinking light issue?

A: Yes, using the wrong detergent can create excessive suds, leading to drainage problems and the blinking red light.

Q: What should I do if the red light continues to blink after trying the suggested solutions?

A: If the issue persists, it’s best to contact a professional technician to diagnose and fix the problem.

Q: Are there any DIY methods to fix water supply problems?

A: You can start by checking the water inlet valve and the supply hose for any issues. However, if the problem persists, it’s best to seek professional help.

Q: Can I prevent door-related blinking light issues?

A: Yes, make sure to close the dishwasher door securely every time you use it to prevent this issue.

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