GE Dishwasher C4 Error Code: What It Means & How to Fix It

C4 = Float switch stuck or drain/sump clogged. C4 means the dishwasher filled twice after a power failure, the float switch is stuck, or the drain or sump is clogged. Freeing the float is often all it takes.

Can you fix it yourself? Yes

Check your model: Error codes can mean different things on different GE models. Find your model number (usually on a sticker inside the door or lid, or on the back) and confirm the code in your user manual.

Safety first: Unplug the appliance (or switch off its breaker) before you remove panels, filters or hoses. Turn off the water supply valves before you disconnect any hose, and keep a towel and shallow pan handy. Never work on wiring, gas lines or sealed refrigerator systems yourself.

Quick checks (2 minutes)

Can you see the float? It's the upside-down cup in the front left corner of the tub floor.

How to fix GE Dishwasher C4

Touch Start, then Cancel/Reset.
Tap the float cover to free it.
Check the sump at the back bottom of the tub (it looks like an upside-down silverware basket) and clear any debris.

Still showing C4?

If it still shows C4, GE says to contact service.

Repair or replace?

If the appliance is under warranty, call GE first, since a repair may be free. Out of warranty, a common rule of thumb is to compare the repair quote with the cost of a new unit and the appliance's age before deciding.

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FAQ

Where is the float on a GE dishwasher?

GE: the front left corner of the dishwasher floor, under a cover that looks like an upside-down cup.

Source

Code meaning and official steps from: https://products.geappliances.com/appliance/gea-support-search-content?contentId=16673. Last verified 2026-10-21.