Bosch Oven Error Code E312

E312 indicates that the temperature sensor built into the oven's control module has been detected as defective. This is not the oven cavity sensor but an internal sensor that monitors the control board's own operating temperature. As a safety response, the oven suspends all operations until the fault is resolved. Resolving it requires replacing the control module.

No. When E312 is active, the oven has suspended all operations as a protective measure, so the appliance will not function anyway. Do not attempt to bypass or override this lockout, as the error exists to protect the electronics and prevent potential hazards associated with unmonitored control board temperatures.

The cost depends primarily on the price of the replacement control module and whether you hire a technician. Control modules for Bosch ovens typically range from around $150 to $400 or more depending on the model. Adding professional labor, total repair costs generally fall between $250 and $600. Getting a firm parts quote for your specific model number before committing to the repair is strongly recommended.

Replacing a control module involves disconnecting electrical connectors and mounting the new board correctly, which is manageable for a confident DIYer who is comfortable working with appliance electronics. However, because the repair involves the main electrical control board, many homeowners prefer to hire a qualified appliance technician to ensure the replacement is installed correctly and safely.

A reset may temporarily clear the error code, but the fault will return once the control board re-evaluates the internal sensor signal. Because the sensor is integrated into the control module and cannot be replaced separately, a reset is not a lasting fix. Permanent resolution requires control module replacement.