LG Oven / Range — Error Code F42

Q: How do I fix the F42 error on a LG oven / range?

Try first: Reset at the breaker. Cycle the circuit breaker; if the voltage error returns, have the supply checked and request service.

A voltage error was detected.

brand LG appliance Oven / Range market US component power supply category power severity degraded

ApplianceDB ranks 1 repair for this code, led by “Reset at the breaker”. That top fix is a moderate-difficulty DIY job, involving the power supply. Severity is classified as degraded — the appliance keeps running but not correctly.

Ranked repair steps

1. Reset at the breaker

Cycle the circuit breaker; if the voltage error returns, have the supply checked and request service.

moderate · basis: manufacturer first

Provenance: facts re-derived from an official manufacturer listing — LG USA Support — Range Error Codes List. Meanings and steps are original paraphrase; nothing is reproduced verbatim.

LG Oven / Range — Error Code F42

Ranked repair steps

1. Reset at the breaker

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