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

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

Educational reference, not a substitute for the manufacturer's service manual. Disconnect power and water before servicing; gas, sealed-refrigerant, and high-voltage work is for qualified technicians only.

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.

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