E2
Bosch Oven
Severity: ModerateWhat it means
E2 means the oven temperature sensor circuit has a short — the sensor is reading an impossibly low resistance.
Test the sensor and wiring, then replace the sensor if it reads close to zero ohms.
Affected Models
- Bosch Electric Oven
- Bosch Serie 2 Oven
- Bosch Serie 4 Oven
- Bosch Serie 6 Oven
- Bosch Serie 8 Oven
Common Causes
- Shorted oven temperature sensor (internal short in the probe)
- Pinched or damaged sensor wire causing a short to ground
- Moisture in the sensor connector
- Control board wiring short on the sensor input
How to Fix It
-
Reset the oven.
Turn off the circuit breaker for 5 minutes.
If moisture caused a temporary short, the reset may clear E2. -
Inspect the sensor wire for damage.
Trace the sensor wire from inside the oven cavity to the connector at the back.
Look for pinching, cracked insulation, or burn marks — particularly where the wire passes through any metal panels. -
Test and replace the temperature sensor.
Disconnect the sensor and test resistance.
A reading close to zero ohms confirms a short in the sensor itself.
Replace with the correct sensor for your Bosch model.
When to Call a Professional
If a new sensor clears E2 but it returns within a few months, the wiring is being damaged by heat exposure — a Bosch technician should reroute or replace the wiring harness.
Frequently Asked Questions
How do I know if it is the sensor or the wiring causing Bosch oven E2?
Disconnect the sensor from the wiring harness and test each part separately. If the sensor reads near zero ohms, replace the sensor. If the sensor tests fine but the harness reads zero ohms, the wiring is shorted.
Can I temporarily use my Bosch oven with an E2 error?
No. E2 means the temperature control system is compromised — the oven may not heat accurately or safely. Disconnect power until the sensor or wiring is repaired.