RCA dishwashers use generic error codes common to many entry‑level and rebranded models (often Chinese OEMs), with E4 being one of the most frequent for overflow/leak detection.
RCA manuals and troubleshooting guides are sparse, but codes align with platforms from brands like Whirlpool, GE, and LG, where E4 signals excess water triggering safety shutdowns.
Common RCA dishwasher error codes
RCA dishwashers share codes with similar budget/portable units:
| Error Code | Meaning | Common Causes | Quick Fix |
|---|---|---|---|
| E4 | Overflow/leak detected | Clogged filter, suds, hose leak | Drain base, clean filter, reset |
| E1 | Door not closed properly | Latch issue, gasket obstruction | Check latch/gasket, reset |
| E2 | Drain fault | Blocked drain hose/filter | Clean filter/hose, check pump |
| E3 | Water heating failure | Heater element, thermostat | Run hot cycle, check temp sensor |
| E5 | Inlet/water supply problem | Kinked hose, low pressure | Check inlet screen/hose |
| E6 | Motor/pump issue | Impeller jam, wiring | Clear sump, test pump |
| E0 | Normal operation/no error | — | — |
| CE | Communication/control error | Panel/board glitch | Power cycle |
Note: Exact codes vary by RCA model (RDW series portable vs built‑in); check door sticker/manual for specifics.
E4: Overflow/leak (most common RCA code)
Meaning: Water level too high in tub/base; float switch triggered. Machine drains continuously.
Causes:
- Filter/sump clogged (food/glass).
- Excess suds (wrong detergent).
- Leaking hoses/seals.
- Faulty float sensor.
Fix:
- Power off 10 min.
- Tilt/drain base water.
- Clean filter/sump.
- Flush drain hose.
- Use HE detergent.
E1–E3: Door, drain, heating errors
E1 (Door): Latch not engaging. Check gasket/debris; realign door.
E2 (Drain): No/low pump flow. Clean filter, straighten hose, spin impeller.
E3 (Heat): Water not warming. Verify hot supply (120°F+); test heater.
E5–E6: Inlet/motor faults
E5 (Inlet): Low/no fill. Clean inlet screen, check pressure/hose kinks.
E6 (Motor): Pump jammed. Clear sump debris; test wiring.
CE: Control glitch. Power cycle; replace board if persists.
Troubleshooting all RCA codes
Universal reset: Unplug 10 min, run drain cycle.
Step‑by‑step:
- Power cycle clears 50% of codes.
- Filter/sump clean fixes E2/E4.
- Hose checks (inlet/drain) for E5.
- Door/gasket inspect for E1.
- Test empty hot cycle post‑fix.
RCA lacks brand‑specific diagnostics; generic steps work.
When to call service
- Pump silent: Failed motor.
- No fill despite open valve: Inlet valve.
- Recurring codes: Sensor/board.
RCA support limited; local tech $100–300.
Prevention
- HE detergent only.
- Monthly filter clean.
- Annual hose check.
- Hot water supply.
FAQs: RCA dishwasher error codes
What’s E4 on RCA?
Overflow clogged filter/suds; clean and reset.
E2 mean?
Drain fault clean filter/hose.
E5 no water?
Inlet clog/kink clean screen, check pressure.
Reset all codes?
Unplug 10 min, drain cycle.
RCA codes like GE?
Yes generic platform; same fixes.
Service easy?
Parts cheap but manuals scarce; local tech best.
