What F51 (Griddle Sensor Error) Means
F51 indicates a Griddle Sensor Error on LG range models with an integrated griddle zone, per LG's range Help Library article, which documents this scheme across its Electric Range, Radiant Cooktop, and Gas Range tabs together.
Common Causes of F51 (Griddle Sensor Error)
- Griddle temperature sensor has failed or lost contact
- Wiring fault to the griddle sensor
🔧 One Safe Check You Can Try
Turn the circuit breaker for the range off, wait 30 seconds, and turn it back on.
⚠ Why You Shouldn't Go Further Than That
- If a breaker cycle doesn't clear F51, the griddle sensor is built into that cooking zone and needs a technician to access and replace - avoid using the griddle function for temperature-sensitive cooking until it's repaired.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.