GE Dishwasher Error Code C4: Meaning & How to Fix It

By the ErrorCodePro Editorial Team · Last reviewed October 20, 2026

GE dishwasher error code C4 means: The machine filled twice after a power failure, the float switch is stuck or failed, or the drain or sump is clogged. [1] Keep using it? Not until the cause is fixed. Start with the owner checks below, beginning with: reset.

Quick facts

Code	C4
Also shown as	None listed by the manufacturer
Brand / appliance	GE dishwasher
System	Drain
Official meaning	The machine filled twice after a power failure, the float switch is stuck or failed, or the drain or sump is clogged. [1]
Keep using it?	Not until the cause is fixed
DIY-safe?	Owner checks only (listed below)
Support	GE Appliances service

On this page: Meaning · Steps · Parts · When to call a technician · Related codes · FAQ

What error code C4 means on a GE dishwasher

The machine filled twice after a power failure, the float switch is stuck or failed, or the drain or sump is clogged. [1]

This is a drain code. Codes and wording can vary by model, so check your owner's manual for your model number.

How to fix GE dishwasher error code C4 (safe owner checks)

Safety first: disconnect power before you remove any panel or reach into the sump or drum. Do not touch wiring, the control board or the motor. If you see water near electrical parts, stop and call a technician. These steps are based on GE's published guidance [1], rewritten for clarity.

Reset. Touch Start, then Cancel/Reset.
Free the float. Tap the float cover, the upside-down cup at the front left of the tub floor.
Clear the sump. Check the sump area at the back bottom of the tub for debris.

Parts that may be involved

Exact parts depend on your model number. This page lists part types only, never part numbers.

No specific part is implied by the manufacturer's guidance for this code.

When to call a technician

C4 persists
Anything involving wiring, the control board, the motor or the water valve electrics
The appliance is under warranty: contact GE Appliances service first

Frequently asked questions

What does error code C4 mean on a GE dishwasher?

GE lists C4 as follows: The machine filled twice after a power failure, the float switch is stuck or failed, or the drain or sump is clogged.

Is it safe to keep using the dishwasher with C4?

Not until the cause is fixed.

Can I fix GE dishwasher error C4 myself?

Only with the owner checks on this page, starting with: reset. If it persists, call a technician or GE Appliances service.

Sources

GE Appliances: Dishwasher Error, Fault or Function Codes (official)

Last reviewed: October 20, 2026. ErrorCodePro is not affiliated with GE.