What E1 Means
An independent Thermador-focused repair guide documents E1 specifically as a temperature sensor open circuit — no resistance reading from the NTC sensor, meaning the oven can't regulate temperature. Thermador's own site doesn't break its generic "E" error code down to this level of detail, so this specific meaning is independently sourced rather than officially confirmed.
Common Causes of E1
- A broken or corroded sensor wiring connection
- A failed temperature sensor probe
🔧 One Safe Check You Can Try
There isn't a safe DIY continuity check on a live oven sensor circuit — note the code and book a technician.
⚠ Why You Shouldn't Go Further Than That
- Reaching the sensor through the cavity or rear panel typically means unauthorized access that can put whatever warranty is left at risk.
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.