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GE Dishwasher C4 Error Code

Overfill float stuck or sump clogged. Here is what it means and how to clear it, easiest fix first.

How to fix GE C4

1. Clear the code

   Touch Start, then cancel or reset the cycle.

2. Free the float

   Unplug the dishwasher or switch off its breaker. Find the float cover on the tub floor and tap it lightly so the float can move freely; remove anything wedged around it.

3. Clean the sump

   Check the sump at the back of the tub floor for food, paper or glass and remove it. Then restore power and run a cycle.

When to call a technician

If C4 returns with the float moving freely and the sump clean, schedule service.

Parts that commonly cause C4

• float switch
• drain pump

Order parts by your exact model number so they fit.

Other GE dishwasher codes

• C1 / C2Draining is taking too long
• C3 / FTD / F56Dishwasher won't drain
• C5Drain time too short (underfill)
• C6Incoming water too cold
• C7Temperature sensor circuit fault
• C8Detergent cup blocked
• Cup OpenDetergent cup not closed
• H2OLow water
• PrSPressure sensor signal fault
• LEAK DETECTEDLeak sensor found water
• 999Control needs a reset (or leak on some models)
• PFPower failure
• Start/Reset light blinkingCycle reset or interrupted

Frequently asked questions

What does C4 mean on a GE dishwasher?

The dishwasher filled twice after a power failure. The overfill float may be stuck or failed, or the drain or sump may be clogged.

Can I fix GE C4 myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear C4, the cause is likely a worn part that needs replacing.

What if C4 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when C4 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.