Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to LG dishwashers
- Confidence medium
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The control is detecting an implausible water-temperature signal. The thermistor may be open or shorted, its wiring may be damaged, or incoming water may be excessively hot.
Most likely causes
- The water-temperature sensor is open, shorted or out of range
- A thermistor connector or wiring harness is loose
- The household hot-water temperature is excessively high
- The main control is supplying or interpreting the sensor circuit incorrectly
Safe checks for the owner
- Allow the unit to cool and verify the home hot-water setting is within a normal domestic range.
- Turn off power at the breaker for ten seconds and retry.
- Do not pour boiling water into the dishwasher or continue use if the tub becomes unusually hot.
Estimated U.S. repair cost
$220–$420, depending on model, access, parts availability and local labor.