Oven temperature sensor failure — oven cannot read internal temperature
The E005 error on the Bosch HGI8054UC indicates oven temperature sensor failure — oven cannot read internal temperature. This typically occurs due to failed oven temperature sensor with open or short circuit. A qualified technician can usually diagnose this in 20–30 min (diagnosis only), but the steps below will help you understand the issue.
Safety Warning
This is a high-severity error. Unplug the appliance immediately and assess the situation before attempting any repair.
Safety Warning
This repair is recommended for certified technicians only. The diagnostic steps below can help you understand the issue before calling for service.
Common Causes of E005
- 1Failed oven temperature sensor with open or short circuit
- 2Damaged sensor wiring due to heat exposure over time
- 3Loose or corroded connector at the temperature sensor plug
- 4Control board temperature input circuit failure
How to Fix E005
- 1
Step 1
Kill the power — either unplug the range or switch off the circuit breaker
- 2
Step 2
Allow the oven to cool completely before proceeding — at least 30 minutes
- 3
Step 3
Locate the oven temperature sensor probe inside the back wall of the oven cavity
- 4
Step 4
Check that the sensor probe is not touching the oven wall and that the connector behind the back panel is firmly seated
- 5
Step 5
If accessible, test the sensor resistance with a multimeter — a working sensor typically reads around 1100 ohms at room temperature
- 6
Step 6
If the sensor reads significantly outside this range, it has failed and needs replacement by a qualified appliance technician
Tools Needed
When to Call a Technician
Sensor probe appears intact but E005 persists — sensor resistance is out of specification and needs professional replacement
Frequently Asked Questions
Common questions about Bosch E005 error
The temperature sensor inside the oven cavity has stopped sending valid readings to the control board. Without knowing the actual temperature, the oven refuses to operate as a safety precaution. The sensor probe — a thin metal rod mounted on the back wall inside the oven — usually needs replacement.
A compatible Bosch oven temperature sensor typically costs between $20 and $60 depending on the specific part number. The replacement procedure is relatively straightforward — most sensors are held in with one or two screws and plug into a connector behind the oven back wall. Professional labor adds $80 to $150 for this repair.
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