Error code reference

LG Dishwasher Error Code 1E

Water level error

Water level error: High Pressure Switch (HPS) does not measure a high level after water supply completion, or HPS measures low level continuously during wash.

First step from the service manual

Check whether the filter micro is clogged; check for bubbles in the tube.

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 1E.

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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1E on my LG LDP6797ST

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Water level error: High Pressure Switch (HPS)

From Service Manual 586423, p.35:

1.Check whether the filter micro is clogged; check for bubbles in the tube.

2.Measure the inlet valve coil resistance at the valve connector. Expected: 1,000 to 1,200 ohms per coil at room temperature.

3.Verify static water supply pressure at the inlet hose. Below 20 psi or fluctuating supply commonly triggers fill-timeout faults.

Part 5220FR2006H

Water inlet valve

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First step from the service manual

Get the full diagnostic procedure for 1E.

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