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Error F18 Degraded US market

LG Oven / Range Error Code F18

F18 on a LG oven / range usually means: F18 indicates an Oven Meat Probe Error. On a LG Oven / Range, code F18 points to the power supply.

Fix it fast: Manufacturer troubleshooting steps. Full ranked steps below.

Likely part
power supply
Fault type
power
Manufacturer source Updated Oct 17, 2026 View source

How to fix F18 — ranked steps

Try these in order. Stop when the code clears.

  1. 1 Manufacturer troubleshooting steps

    DIY
    • Press the CLEAR/OFF key and try the original function again.
    • If the error code reappears, turn the circuit breaker to the unit off and wait 30 seconds before turning it back on.
    Source

Other LG Oven / Range codes

F42Degraded

A voltage error was detected. On a LG Oven / Range, code F42 points to the power supply.

F17Degraded

F17 indicates an Convection Fan Error. On a LG Oven / Range, code F17 points to the power supply.

F21Degraded

F21 indicates a Steam Sensor Failure. On a LG Oven / Range, code F21 points to the power supply.

F22Degraded

F22 indicates a Steam Sensor Failure. On a LG Oven / Range, code F22 points to the power supply.

F24Degraded

F24 indicates a Steam Sensor Failure. On a LG Oven / Range, code F24 points to the power supply.

F25Degraded

F25 indicates a Steam Sensor Failure. On a LG Oven / Range, code F25 points to the power supply.

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