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GE · Dishwasher · C8

Common troubleshooting mistakes

The detergent cup is blocked from opening fully.

Diagnostic nodeC8COMMON-MISTAKES
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Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Selected GE dishwashers with detergent-cup monitoring.

GUIDANCE

Common troubleshooting mistakes for error C8

Common mistakes include assuming the code names a failed part, using instructions for another model family, repeated resets, and continuing after a leak or electrical warning.

Safe sequence

  1. 1Turn off the dishwasher before rearranging sharp items.
  2. 2Remove cookware or utensils that touch the detergent cup.
  3. 3Close and latch the door, then run a short test cycle.

Stop and get qualified help when

  • The dispenser is cracked or mechanically jammed
  • C8 returns with the cup completely unobstructed
Primary sourceGE Appliances — dishwasher fault codes ↗Verified 2026-07-17 · manufacturer