C8 on a GE dishwasher shows the detergent cup cannot open fully; clear what is in the way and latch the door.
Model compatibility: GE reuses codes across series and model years, so C8 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The detergent cup is blocked from opening fully.
C8 on the display indicates that the detergent cup is blocked from opening fully.
Clearing it
Remove the obstruction, for example silverware or a pan.
Close and latch the door.
Wait 30 seconds for the cup to open.
Related cup code
Cup Open is the reminder that the cup has not been closed. For another C-series display, C7 refers to the water temperature sensor circuit.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your GE appliance?
Book a specialist visit for a clear estimate and approval before any repair.
