What F45, F46 (Fan Error) Means
F45 and F46 both indicate a Fan Error, per LG's range Help Library article, which documents them as two separate codes with the identical description - likely covering the cooling fan or a cavity fan at two different detection points.
Common Causes of F45, F46 (Fan Error)
- Fan motor fault
- Fan obstructed by debris
🔧 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 a repeat F45 or F46, the fan needs a technician's inspection - these fans are typically inside the range's rear or top vent assembly, not a surface-accessible part.
- Avoid running self-clean or extended high-heat cooking cycles until a fan-related fault is resolved, since these fans help manage heat around the range's electronics and controls.
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.