All Bosch Microwave Error Codes — Complete List (2026)
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating motor control error – the controller cannot communicate with drive motor
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating communication error – internal control boards lost connection
The appliance control system detected a condition indicating drain system failure – water cannot remove water properly
The appliance control system detected a condition indicating door or lid lock error – appliance cannot confirm door is securely locked
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating fan motor failure – cooling or ventilation fan not operating
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters
The appliance control system detected a condition indicating water supply error – the appliance is not receiving adequate water supply
The appliance control system detected a condition indicating overflow protection triggered – water level exceeded safe limit
Bosch microwaves show error codes when they detect issues with the magnetron, door switches, control board, or other components. This page lists all 234 Bosch microwave error codes with their meanings and troubleshooting steps. Important: never attempt to repair internal high-voltage microwave components yourself — always contact a qualified technician for internal repairs. Common issues include door switch failures, touchpad malfunctions, and thermal fuse problems.
Most Common Bosch Microwave Problems
Sensor calibration error – sensor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters.
Heater circuit fault – heating
The appliance control system detected a condition indicating heater circuit fault – heating element is not operating correctly.
Sensor calibration error – sensor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters.
Sensor calibration error – sensor
The appliance control system detected a condition indicating sensor calibration error – sensor values conflict with expected parameters.
Temperature sensor fault –
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range.
Bosch Microwave Maintenance Tips
- 1Clean the interior after each use to prevent food buildup
- 2Inspect the door seal and latch regularly
- 3Never run the microwave empty — it can damage the magnetron
- 4Clean the waveguide cover (mica plate) if food splatters on it
- 5Use microwave-safe containers only
- 6Ensure proper ventilation around the unit
When to Call a Professional
Always Call a Pro
- ✖ Any internal component repair (high voltage danger)
- ✖ Magnetron replacement
- ✖ Capacitor or diode issues
Consider Professional Help
- ⚠ Door switch replacement
- ⚠ Control board issues
Safe to DIY
- ✔ Checking door latch
- ✔ Cleaning interior and waveguide cover
- ✔ Resetting the appliance
- ✔ Testing power outlet