Thermador Cooktop Error Code E0345

E0345 means the cooktop's control system has detected an error with the temperature sensor circuit on the right ADB (relay board) that manages the right induction zone. The board is either not receiving a valid signal from the module's temperature sensor or is misreading it. As a safety measure, the cooktop disables the affected zone until the fault is corrected. Replacing the right ADB is the primary recommended repair.

The right induction zone will be disabled while E0345 is active, so it will not operate. The remaining zones may still function, but continued use of the cooktop with an active fault code is not recommended until the underlying board issue has been diagnosed and repaired. Operating with a faulty ADB could risk further damage to related components.

Repair costs vary depending on parts availability and labor rates in your area. The right ADB relay board itself typically ranges from around $150 to $350 or more depending on the specific model. With professional labor added, total repair costs generally fall in the range of $250 to $550. Getting a quote from an authorized service provider before proceeding is advisable.

Replacing the right ADB requires working inside the cooktop with the power fully disconnected, and involves handling induction components that store high-voltage charge. A qualified appliance technician is strongly recommended for this repair. Knowledgeable DIYers who are comfortable with appliance electronics can attempt it, but must ensure the unit is fully de-energized and capacitors have discharged before touching any internal components.

A power reset by switching off the circuit breaker for 30 seconds and restoring power may temporarily clear the display, but E0345 will return if the ADB fault is still present. Because this code reflects a hardware failure in the relay board rather than a software glitch, a reset alone will not resolve the underlying problem. A board replacement is required for a permanent fix.