Written by
Marcus Delaney Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeC8
ApplianceDishwasher
Meaning of C8
The display is reporting that something keeps the detergent cup from opening all the way.
How to clear it
Take out the item in the way, such as silverware or a pan.
Shut the door and latch it.
Allow 30 seconds for the cup to open.
Cup-related and C-series neighbours
Cup Open is a different message: the cup was never closed. Among the other C codes, C7 deals with the water temperature sensor circuit.
Dishwasher repair in San Francisco
When the cup still will not open, call (415) 729-2045 for GE dishwasher repair in San Francisco and the Bay Area. Have your model number ready, and tell us what had been blocking the cup.
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.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your GE appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
