GE dishwasher C4 code: overfill after a power failure

The dishwasher overfilled after a power outage. Usually the float is stuck, or a clogged drain or sump let water build up.

Likely causes

Listed from most to least common.

1. Float stuck in the up position
2. Float switch failed
3. Clogged drain or sump
4. Power outage during a fill

How to fix the C4 code

Unplug the dishwasher or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Start, then reset

   Press Start, then press Cancel/Reset to let the dishwasher pump out the extra water.

2. 2

   Step 2: Free the float

   With power off at the breaker, find the small dome-shaped float in the front corner of the tub. Lift it gently and let it drop. It should move freely.

3. 3

   Step 3: Clean the sump

   Remove the bottom rack and filter. Clear food, labels or glass from the sump and around the float.

You'll need: Towels, sponge and cup, gloves.

Parts that may need replacing

Check your model number on the label inside the door or on the back before ordering.

• GE dishwasher float switchCheck prices

When to call a technician

If the float moves freely and the sump is clean but C4 returns, the float switch has likely failed. Call a technician.

A typical repair for this code costs $150–$300 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• GE built-in dishwashers (GDT, GDF, GDP series)
• GE Profile dishwashers (PDT series)
• Café dishwashers (CDT series)

Codes can differ slightly between models. Your owner's manual is the final word and is available from GE support.

Common questions