Thermador PRD366WGU Pro Grand Range Fc Error Fix: Oven Door Switch Fault

The oven door switch has failed or is stuck, causing the oven to incorrectly detect the door status. This may prevent the oven from starting or cause safety lock issues.

Medium severity2 fixes available

Quick Answer

Error Fc on the Thermador PRD366WGU Pro Grand Range means: Oven Door Switch Fault. The top-ranked community fix is “Replace Oven Door Switch (DIY)” (medium difficulty, ~30 min, DIY cost: $15-$35). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · oven

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

Root Cause Analysis

Sensor Malfunction → Door Switch FaultyPrimary

Control Board Failure

Electrical Fault → Wiring Harness Damaged

When to Call a Professional

While many oven repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $90-$160.

Other Thermador PRD366WGU Pro Grand Range Error Codes

Electronic Oven Control Failure

1 fix

Electronic Oven Control Failure

1 fix

F10

Control Board Communication Error

2 fixes

F11

Oven Temperature Sensor Short Circuit

2 fixes

F12

Oven Control Board Overvoltage Protection Triggered

2 fixes

F13

Oven High Limit Thermostat Open

2 fixes

Oven Over-Temperature

2 fixes

Open Oven Temperature Sensor (RTD)

1 fix

People Also Ask About Thermador PRD366WGU Pro Grand Range Error Fc

What does error code Fc mean on a Thermador PRD366WGU Pro Grand Range?

Error code Fc on the Thermador PRD366WGU Pro Grand Range means: Oven Door Switch Fault. The oven door switch has failed or is stuck, causing the oven to incorrectly detect the door status. This may prevent the oven from starting or cause safety lock issues.

How do I fix error code Fc on my Thermador PRD366WGU Pro Grand Range?

The most successful fix is "Replace Oven Door Switch (DIY)" (medium difficulty, ~30 minutes). Estimated DIY cost: $15-$35. HomeMD has 2 community-ranked fixes for this error.

Is error code Fc on a Thermador PRD366WGU Pro Grand Range serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Thermador PRD366WGU Pro Grand Range error Fc myself?

Yes — the top-ranked community fix ("Replace Oven Door Switch (DIY)") is rated medium difficulty and takes about 30 minutes. Tools needed: Phillips screwdriver, Nut driver, Multimeter.

How much does it cost to repair Thermador PRD366WGU Pro Grand Range error Fc?

DIY cost: $15-$35. Professional repair typically costs $90-$160. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Thermador PRD366WGU Pro Grand Range have?

The Thermador PRD366WGU Pro Grand Range has 8 other known error codes, including: F0 (Electronic Oven Control Failure), F1 (Electronic Oven Control Failure), F10 (Control Board Communication Error), F11 (Oven Temperature Sensor Short Circuit), F12 (Oven Control Board Overvoltage Protection Triggered), and 3 more.

What other error codes does the Thermador PRD366WGU Pro Grand Range have?

The Thermador PRD366WGU Pro Grand Range has 8 other known error codes:

F0 — Electronic Oven Control Failure (1 fix)
F1 — Electronic Oven Control Failure (1 fix)
F10 — Control Board Communication Error (2 fixes)
F11 — Oven Temperature Sensor Short Circuit (2 fixes)
F12 — Oven Control Board Overvoltage Protection Triggered (2 fixes)
F13 — Oven High Limit Thermostat Open (2 fixes)
F2 — Oven Over-Temperature (2 fixes)
F3 — Open Oven Temperature Sensor (RTD) (1 fix)

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