Not Heating
Bosch Oven
Severity: ModerateWhat Does This Error Mean?
A Bosch electric oven that does not heat most often has a failed bake element or heating element. Check for an E0, E1, or E2 error code first — these point to the specific fault.
Affected Models
- Bosch Electric Oven
- Bosch Gas Oven
- Bosch Serie 2 Oven
- Bosch Serie 4 Oven
- Bosch Serie 6 Oven
- Bosch Serie 8 Oven
Common Causes
- Failed bake or upper heating element
- Open temperature sensor (E0)
- Failed gas igniter (gas ovens)
- Blown oven thermal fuse
- Faulty control board not activating the heating circuit
How to Fix It
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Check for an error code.
Look at the display when the oven tries to heat. E0 indicates an open sensor. E1 indicates overheating. E2 indicates a shorted sensor. Fix the relevant fault before continuing.
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Inspect the heating elements.
Look inside the oven for the bake element (bottom) and grill element (top). Visible burn marks, breaks, or blistering indicate failure. Test with a multimeter for continuity.
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Test the oven temperature sensor.
Disconnect the sensor connector and test resistance. Replace the sensor if it reads open or near-zero. A working sensor at room temperature reads several hundred to a few thousand ohms.
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Test the igniter or gas valve (gas ovens).
If the igniter glows but does not light the gas within 90 seconds, it is weak and must be replaced. A gas valve fault requires a qualified gas technician.
When to Call a Professional
If elements and the sensor test fine but the oven still does not heat, a Bosch technician should test the control board and wiring harness.