Bosch Microwave E17 Error: Preheat Failed
What Does Bosch Microwave Error Code E17 Mean? Error code E17 on a Bosch combi-microwave means the convection preheat function failed. Standard microwave mode should still work fine. The convection heater or temperature sensor needs professional service.
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. Standard microwave functions are not affected. Only convection/combo modes will not work properly.
Can I reset the code?
Yes. Power cycling may clear a temporary sensor issue. Persistent E17 needs repair.
When to stop immediately?
Stop if you notice: Burning smell during preheat, Neither microwave nor convection works.
Symptoms You May Notice
Convection preheat stalls
The microwave attempts to preheat in convection mode but never reaches the set temperature.
Possible Causes
Faulty convection heating element
The convection heater has failed and cannot generate heat.
Requires ProfessionalTemperature sensor fault
The oven cavity sensor is reading incorrectly.
Requires ProfessionalSafe Checks You Can Do
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1
Try microwave mode only
Test if standard microwave mode works normally without convection.
If microwave mode works, only the convection component is affected.
When to Call a Professional
Contact a qualified technician if:
- Convection element has no continuity
- Sensor reading incorrect
- Fan not circulating air
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Microwave Repair Service Schedule Appointment