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

  1. Disconnect power by switching off the dishwasher at the breaker for 30–60 seconds and restoring it to clear temporary error memory.
  2. Open the dishwasher and locate the float assembly (usually a plastic cover in the lower front corner).
  3. Gently tap the float up and down to free any debris that might cause it to stick.

DIY Fix Clear drain and sump debris

  1. Remove the bottom dish rack and inspect the sump/filter area for food debris or foreign objects.
  2. Clear any visible obstructions.
  3. Run a short cycle to see if error persists.

Technician Only Float switch diagnostic and possible replacement

  1. Disconnect dishwasher power and water supply.
  2. Access and test the float switch continuity with a multimeter.
  3. Replace float switch if out of specification.

Parts needed: Float switch assembly

Technician Only Inspect and service drain components

  1. Check and clean drain pump, hose, and check valve to ensure proper drainage and no backflow.
  2. Replace drain pump or hose if defective or clogged beyond cleaning.

Parts needed: Drain pump, Drain hose, Check valve

🛑 When to Call a Pro:
  • Error persists after basic user-level resets and cleaning.
  • Dishwasher exhibits leaks, repeated errors on subsequent cycles, or unusual noises from pump area.

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

Data last verified: 2026-01-10

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