C4GE Appliances Dishwasher — GE Dishwasher C4 Error Code
Water overfill after power recovery
Severity
Critical
Difficulty
Moderate
Est. Cost
What's Happening
The dishwasher filled twice, usually after a power failure. The inlet valve may be stuck open or the control board sent a double fill signal.
How to Fix It
Disconnect power for 30 seconds to reset. If C4 returns during normal operation, the water inlet valve is stuck open and needs replacement.
Frequently Asked Questions
What does C4 mean on a GE dishwasher?
C4 means the dishwasher overfilled, usually after a power interruption caused a double fill. The inlet valve may be stuck.
Is C4 caused by a power outage?
Often yes. The control board may send a double fill signal when power is restored. A simple reset usually fixes it.
How do I know if the inlet valve is stuck?
If C4 occurs during normal operation (no power outage), the valve is likely stuck open. Watch for water continuing to fill with the dishwasher off.