Error code reference
LG Dishwasher Error Code 7C
Vane motor error (S/W ver. 7134+)
Vane motor error (S/W ver. 7134+): reset position sensing failure; distribute changes to Middle top then keeps going remaining cycle.
First step from the service manual
Check the connections for the Motor vane and Sensor vane connectors.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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