GE Dishwasher Error C4
⚡ Quick Answer: The GE Dishwasher C4 error indicates a drain pump failure, often triggered by a stuck or failed float switch, causing the appliance to register an ove... ✅ DIY Fixable
What Does Error C4 Mean?
The GE Dishwasher C4 error indicates a drain pump failure, often triggered by a stuck or failed float switch, causing the appliance to register an overfill condition. This error typically occurs after a power interruption, leading to unusual noises and failure to drain water. Users may notice that the dishwasher does not run normal cycles until the error is cleared, and the float mechanism may be falsely detecting water levels.
Common Symptoms:
- Dishwasher displays C4 on the control panel after power interruption or cycle start.
- Dishwasher may not run normal cycles until cleared.
- Float mechanism triggering overfill detection even when water level appears normal.
- Error persists after simple resets.
Possible Causes
- Stuck or failed float switch (water level float) triggering false overfill condition (high)
- Debris clogging sump or drain path causing erroneous water level detection (medium)
- Residual water from improper drain or check valve issues leading to erroneous overfill signal (medium)
How to Fix Error C4
DIY Fix Basic reset and float check
- Disconnect power by switching off the dishwasher at the breaker for 30–60 seconds and restoring it to clear temporary error memory.
- Open the dishwasher and locate the float assembly (usually a plastic cover in the lower front corner).
- Gently tap the float up and down to free any debris that might cause it to stick.
DIY Fix Clear drain and sump debris
- Remove the bottom dish rack and inspect the sump/filter area for food debris or foreign objects.
- Clear any visible obstructions.
- Run a short cycle to see if error persists.
Technician Only Float switch diagnostic and possible replacement
- Disconnect dishwasher power and water supply.
- Access and test the float switch continuity with a multimeter.
- Replace float switch if out of specification.
Parts needed: Float switch assembly
Technician Only Inspect and service drain components
- Check and clean drain pump, hose, and check valve to ensure proper drainage and no backflow.
- Replace drain pump or hose if defective or clogged beyond cleaning.
Parts needed: Drain pump, Drain hose, Check valve
- Error persists after basic user-level resets and cleaning.
- Dishwasher exhibits leaks, repeated errors on subsequent cycles, or unusual noises from pump area.
Next step
Choose the next step for C4
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Float Switch
Detects the maximum water level to prevent overflow and potential flooding.
- Typical part-only price
- $15 - $40
- DIY difficulty
- Easy
- Estimated time
- 10-20 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 60W |
|---|---|
| component | Drain Pump Assembly |
| resistance | 10-30 ohms |
| part_number | WD19X10018 |
| voltage_rating | 120V AC |
Common Questions
What does C4 error mean on GE Dishwasher?
C4 error means a drain pump failure, often due to a stuck float switch causing overfill detection.
Can I fix GE Dishwasher C4 error myself?
Yes, you can reset the dishwasher and check the float assembly for obstructions.
How much does it cost to fix C4 error?
Repair costs range from $30–$80 for parts, plus additional labor costs.
When should I call a technician for C4?
Call a technician if the error persists after resets, or if there are leaks or unusual noises.
Sources & References
- GE Appliances Dishwasher Error Codes Listing (official)
Data last verified: 2026-07-26
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