Error code reference

LG Dishwasher Error Code 9C2

Abnormal voltage (S/W ver. 7134+)

Abnormal voltage (S/W ver. 7134+): DC Link voltage is high or low, switches to stop mode.

First step from the service manual

Check for high or low voltage supply.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Get the full diagnostic procedure for 9C2.

Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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9C2 on my LG LDP6797ST

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Abnormal voltage (S/W ver

From Service Manual 961997, p.49:

1.Check for high or low voltage supply.

2.Measure line voltage at the power cord terminal block. Expected: 120 VAC (L1 to neutral) or 208 to 240 VAC between L1 and L2 under load.

3.Inspect the cord strain relief and terminal block screws for signs of arcing or heat discoloration. Loose connections here mimic an intermittent power failure to the control board.

Part EAD62329119

Power cord assembly

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First step from the service manual

Get the full diagnostic procedure for 9C2.

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