Frigidaire Oven Error F40: Cooktop Lockout — Surface Burners Disabled

1. SAFETY: F40 / F41 cooktop lockout is not a safety emergency, but no burners will operate while active.
2. Consult your model's user manual for the specific cooktop lock deactivation sequence — common sequences include holding the Lock or Off button for 3–6 seconds.
3. If the lockout cannot be cleared with a button sequence, turn off power at the circuit breaker for 1 minute, then restore.
4. If liquid was spilled on the panel, dry the control surface thoroughly with a dry cloth before restoring power.
5. After power restore, attempt to use the cooktop. If F40 / F41 clears and elements respond, the issue is resolved.

Error F40 on your Frigidaire oven means: The cooktop surface elements have been locked out by the control system. F40 and F41 indicate that the cooktop lockout feature is active — no surface burner or element will respond to knob or touch inputs while this code is displayed. This is most commonly triggered by a control board detecting an unsafe condition on the cooktop, or by the cooktop lock feature being engaged. Also displayed as F41 on some Frigidaire models. The oven's self-diagnostic system has detected this condition and restricted operation.

The most frequent cause is cooktop lock feature activated — on some models, holding certain button combinations engages a lockout that displays f40 or f41. Work through the causes and fix steps below in order — many Frigidaire oven errors are resolved with a power cycle or a simple part swap.

Error F40 is DIY-safe. No special tools are required and the fix typically takes under 10 minutes. Follow all steps in sequence.

The cooktop lock on Frigidaire ranges is a child safety feature. Holding the Off button for 6 seconds is the unlock method on most models — check the user manual for your specific model number if this does not work.

Frigidaire oven warnings like this often appear after interrupted heating, control resets, sensor mismatch, or a fault that returns during warm-up rather than during a stable cook cycle.

• Assuming the display code proves one exact failed part before the safe first checks are done.
• Replacing a lock or latch too early when alignment, trapped laundry, or startup conditions may still explain the warning.
• Restarting the appliance repeatedly instead of confirming whether the same fault returns after one clean recovery attempt.

• Cooktop lock feature activated — on some models, holding certain button combinations engages a lockout that displays F40 or F41
• Control board has temporarily locked the cooktop due to a detected anomaly (resolved by power cycling)
• Spilled liquid on the control panel triggering a ghost input that engaged the lockout

• Do not attempt to bypass the cooktop lockout — the interlock exists to prevent unintended operation and bypassing it creates a safety risk

F40 / F41 returns immediately after a 1-minute power cycle and the unlock sequence does not clear it

• Keep the control panel dry and clean — spills that seep behind the glass or keypad can cause ghost inputs that trigger cooktop lockout

Use the code page for one careful first pass, then stop if the same warning returns or the appliance still cannot get back to normal operation.