Error code reference

Bosch Microwave Error Codes

9 error codes documented with diagnostic procedures.

Have your model number? Get codes specific to your unit.

E1Thermistor open circuit detected.E17Preheat fail E2Safety time was reached; oven is in off condition.E3Damper function failed.E4Thermistor short circuit detected.F-4Humidity sensor self-heating time exceeds 64 seconds or zero balancing voltage does not…H97Self-diagnostic failure code indicating a magnetron and/or inverter circuit problem area…H98Self-diagnostic failure code indicating a magnetron and/or inverter circuit problem area…H99Self-diagnostic failure code indicating a magnetron and/or inverter circuit problem area…

Get the full diagnostic procedure for any code

Step-by-step tests, expected values, wiring diagram references, and verified part numbers.

Get Started $9.95 3-day pass

$29/month for all brands and Max diagnostics, with 70 Max messages a day. Plus applicable tax.

More Bosch error codes