What E0105 Means
On the long four-digit control generation, E0105 is published by Thermador with the same wording it gives the short-code E04: the machine ran its own start-up self-test and came back with a heating-electronics result it will not accept. The number differs only because the board reports problems in the newer four-digit scheme.
Common Causes of E0105
- A heating circuit part the self-test measured outside its expected range
- A control board that cannot read the heater circuit it is supposed to supervise
- A loose or corroded harness plug between the board and the heating circuit
🔧 One Safe Check You Can Try
Nothing here is a homeowner test. Write the code down together with your model and FD number from the door-edge sticker, then call it in — Thermador routes this one straight to support rather than to a checklist.
⚠ Why You Shouldn't Go Further Than That
- Everything the self-test looked at sits on the line-voltage side of the board, which is not a place to poke around while the machine is plugged in.
- Thermador publishes no reset step for this number, so repeated power cycling just delays the measurement a technician would take.
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.