GE dishwasher error code

C4

Float switch or sump issue

The dishwasher filled twice after a power failure, which points to a stuck float switch or a clogged drain or sump.

Try these free fixes first

Unplug the dishwasher before opening any panel.

  1. Press Start and then Cancel/Reset.
  2. Gently tap the float cover in the tub corner so it moves freely.
  3. With power off, check the sump and filter for debris and clean them.
  4. Run a short cycle to confirm it fills and drains normally.

Still showing C4?

Call service if the float moves freely and the sump is clean but the code returns, as the float switch may have failed.

Float switchCheck that the part matches your exact model number (usually on a sticker inside the door or on the back).Find the part
Prefer a pro?Compare quotes from local appliance repair services.Get repair quotes (soon)

Questions people ask

What does C4 mean on a GE dishwasher?

C4 on a GE dishwasher means: float switch or sump issue. The dishwasher filled twice after a power failure, which points to a stuck float switch or a clogged drain or sump.

How do I fix GE dishwasher error C4?

Press Start and then Cancel/Reset. Gently tap the float cover in the tub corner so it moves freely. With power off, check the sump and filter for debris and clean them. Run a short cycle to confirm it fills and drains normally.

When should I call a repair technician?

Call service if the float moves freely and the sump is clean but the code returns, as the float switch may have failed.

Related dishwasher codes

Samsung 4CDishwasher: Water supply problemSamsung 9EDishwasher: Not enough waterLG IEDishwasher: Not enough water fillingLG FEDishwasher: Too much water in tubBosch E14Dishwasher: Flow meter or fill problemBosch E16Dishwasher: Water filling problem

Source: GE official support · Reviewed 2026-10-01