On the covered LG range or oven, F51, F52, F59 means a Griddle Sensor Error — LG's own wording. First, confirm the griddle was in use when the code appeared. Then: for F51, F52 and F59 LG gives a breaker reset of 30 seconds with no CLEAR/OFF step — LG's own sequence.
Differential
Likely causes of “LG range or oven code F51, F52, F59”, and how to tell them apart
- 1
A griddle temperature sensor fault
What separates it The code appears when the griddle element is used
How to confirm Note whether the griddle plate was on the burner
- 2
A griddle plate that is not seated
What separates it The sensor loses contact
How to confirm Check the plate sits flat and fully in place
- 3
Grease around the sensor
What separates it Residue insulates the sensor
How to confirm Clean around the sensor with the plate cool
- 4
A wiring or control fault
What separates it The code returns on a clean griddle
How to confirm A technician checks the connection
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the plate was fitted correctly
- The state of the griddle surface
- Whether it appears at once or after heating
Try in this order
0 of 9 completedWhat to do first
ReversibleConfirm the griddle was in use when the code appeared.
Correct only the documented fault domain
ReversibleFor F51, F52 and F59 LG gives a breaker reset of 30 seconds with no CLEAR/OFF step — LG's own sequence.
Check the plate
ReversibleConfirm the griddle plate sits correctly and nothing is caught under it.
Use LG's breaker reset
ReversibleTurn the breaker off for 30 seconds and back on.
Reseat the plate
ReversibleLift the griddle plate off and set it back so that it lies flat and seats fully.
Clean around the sensor
ReversibleWith the plate cool, wipe grease from the sensor area with a damp cloth, avoiding the electrical contacts.
Try a lower heat
ReversibleSee whether the code follows the temperature setting.
Check the connection point
ReversibleLook for burnt grease or a bent contact under the plate.
Record the pattern
ReversibleNote the code, the heat level and whether it appeared at once.
Model-specific
What is true of this model and not of its siblings
- Models
- Only ranges with a griddle.
- Care
- Keep the contacts dry and clean.
- What LG says
- The breaker reset, then service.
Stop boundary
When this stops being a self-service repair
- !LG gives a breaker reset for this code; if it returns, book service
- !Let the griddle cool before cleaning
- !Do not use a griddle with a damaged cord or plate
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. LG gives all four griddle codes the breaker reset only.
Exact questions
Common questions
What does F51, F52, F59 mean on a LG range or oven?+
a Griddle Sensor Error — LG's own wording.
Can I use the other burners?+
Generally yes.
Which codes name the griddle sensor and the griddle heating fault?+
LG words F51 as a griddle sensor error and F56 as a griddle heating fault; they share this page.
Can I wash the plate?+
Only as the manual says; most plates must be kept dry at the contacts.
Is the oven affected?+
No, the griddle has its own circuit.
Does grease cause it?+
Residue around the sensor can insulate it and cause a false reading.
What if the plate is damaged?+
A warped or dented plate may not sit properly and should be replaced.
How do I know my range has a griddle?+
The cooktop has a long middle zone for a griddle plate and a griddle key on the control; without those, this code does not apply.
Can I use the griddle until it is repaired?+
If the code returns, it is best not to, because the sensor is what keeps the temperature under control.
What should I tell the technician?+
The exact code, the heat setting, whether the plate sat flat, and whether grease had built up near the sensor.
Why does the griddle code appear only sometimes?+
Grease and a plate that is slightly off the contacts give an intermittent reading, which is why reseating and cleaning is the first step.
Can I cook on the griddle at a lower setting?+
If the code appears at every heat it is best not to, because the sensor is what controls the temperature.
Does a new plate fix it?+
Only if the old plate is warped or damaged; the sensor sits in the range and not the plate.