Viking range Error Code F05

What does F05 mean?

Bake or broil relay on control board has failed, causing continuous heating or no heat.

Common causes

• Welded (stuck closed) relay on control board
• Shorted heating element
• Power surge damage to board
• Component failure on board

Diagnostic & testing steps

1. 1. If oven is overheating, turn off breaker immediately
2. 2. Test bake element: 20-50 ohms expected
3. 3. Test broil element: 15-40 ohms expected
4. 4. Check for relay clicking when oven is turned on/off
5. 5. Replace electronic oven control board if relay is stuck

Tools required

• Multimeter
• Phillips screwdriver

OEM parts & part numbers

Electronic Oven Control Board

Part numbers: PB070129, 013142-000

Safety warning

⚠️ If oven is overheating, turn off breaker immediately. Fire risk with stuck relay.