Bosch Range Error Code E312

E312 indicates that the temperature sensor inside the control module has been detected as defective. This sensor monitors the control board's own temperature to protect the electronics during operation. When a fault is detected, Bosch suspends all oven functions until the issue is corrected. The control module itself is the component that needs to be replaced.

The range suspends oven operations automatically when E312 is active, so the oven functions will not run. Surface burners on a gas range may still operate depending on your model, but you should avoid attempting to override or bypass the lockout. The error exists to protect the appliance electronics, and continued attempts to force operation are not recommended.

Resetting the control by cutting power to the range for several minutes may temporarily clear the E312 code, allowing oven operation to resume briefly. However, if the internal sensor on the control module is genuinely defective, the error will return once the board runs its diagnostics again. A reset alone is not a fix and should only be used to confirm whether the fault is intermittent or persistent.

Replacing a control module requires disconnecting power, accessing the rear or front control panel depending on the model, and carefully reconnecting wiring harnesses. A confident DIYer with basic electrical safety knowledge can perform this repair, but given the cost of the part it is advisable to have a technician confirm the diagnosis first. Incorrectly installed boards can cause additional faults.

The primary cost is the replacement control module, which typically falls in the range of $150 to $400 or more depending on the specific Bosch model. If you hire a technician, labor costs generally add $100 to $200 on top of the part price. Getting a firm parts quote for your specific model number before scheduling service is a good way to avoid surprises.