GE Dishwasher Error Code C8

C8 is specific to the GE GSD2800D dishwasher and means the detergent dispenser cup did not open fully during the wash cycle. The machine detected that the cup sensor switch was still being held closed by the latch arm, indicating the cup never completed its full rotation. This is typically caused by a physical obstruction in the rack, residue buildup, or a problem with the latch arm or lever mechanism.

C8 does not indicate an electrical hazard or water leak, so it is not a safety risk in the traditional sense. However, if the dispenser is not opening, detergent is not releasing into the wash cycle, meaning your dishes are being washed without soap and will not be sanitized properly. It is best to resolve the issue before running additional cycles.

If the cause is simply a loading issue or detergent buildup, the repair costs nothing beyond your time. If the latch arm, activator lever, or sensor switch needs replacement, parts for this dispenser assembly typically range from around $15 to $60 depending on the component, plus labor if you hire a technician. Full appliance repair service calls generally range from $80 to $200 or more depending on your area and the extent of the repair.

Start by checking the lower rack for any tall items positioned in front of the detergent dispenser that could block it from opening. Next, clean around the dispenser cup, hinge, and latch area to remove any detergent residue. If the cup opens freely with no obstruction, inspect the activator lever and sensor switch for damage or misalignment. If the lever or switch is faulty, those components will need to be replaced.

Resetting the dishwasher may clear the code temporarily, but if the underlying cause is still present, the C8 fault will return during the next cycle when the dispenser fails to open again. A reset is not a fix. You need to address the physical or mechanical cause of the blocked dispenser before the error will stay clear.