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LG Oven Error Codes

6 error codes with causes and step-by-step fixes

Code	Meaning	Severity	DIY	Est. Cost
F1	Oven temperature sensor open circuit	⚠ High Severity	easy	$25–$55
F2	Oven over-temperature — exceeded maximum safe temperature	🛑 Critical — Stop Using	hard	$0–$70
F3	Oven temperature sensor short circuit	⚠ High Severity	easy	$25–$55
F5	Door latch failure during self-clean cycle	⚠ Medium Severity	moderate	$60–$140
F6	Door lock switch open — door latch not detecting locked position	⚠ Medium Severity	moderate	$60–$140
F9	Control board failure — internal fault	⚠ High Severity	hard	$150–$380

⚠️ Serious Errors — Act Quickly

Oven over-temperature — exceeded maximum safe temperature

The oven temperature has exceeded the safe operating limit (typically 590°F duri…

Oven temperature sensor open circuit

The oven temperature sensor (resistance temperature detector) has failed with an…

Oven temperature sensor short circuit

The oven temperature sensor is reading abnormally low resistance (short circuit)…

Control board failure — internal fault

The main electronic control board (ERC — Electronic Range Control) has experienc…