What F3 Means
An independent Thermador-focused repair guide documents F3 on the oven side of a range as a temperature sensor short circuit — the sensor reads close to zero ohms, the opposite failure mode from F1's open circuit. Independently sourced rather than confirmed on Thermador's own generic error documentation.
Common Causes of F3
- A shorted temperature sensor probe
- Damaged sensor wiring insulation causing an unintended short
🔧 One Safe Check You Can Try
As with F1, this isn't a safe DIY continuity check with the oven live — note the code and book a technician.
⚠ Why You Shouldn't Go Further Than That
- Confirming a short versus an open circuit needs proper meter testing with the oven de-energized, not a guess.
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.