Bosch Microwaves Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Microwave will not start; display shows E01 shortly after pressing Start.
Door Interlock Safety Circuit Fault
E02
Microwave stops heating shortly after start and displays E02.
Magnetron Overheat / Cooling System Fault
E03
Microwave does not heat and shows E03 on the display.
Magnetron / High Voltage Circuit Fault
E04
Microwave stops and displays E04, often when using sensor cooking or auto programs.
Humidity / Steam Sensor Fault
E05
Microwave shows E05 and will not start or stops shortly after starting.
Inverter / Power Supply Fault (Inverter Models)
E06
Microwave displays E06 and does not heat, though the turntable and light may operate.
Relay / Power Output Control Fault
E07
Microwave shows E07 and may shut down unexpectedly during operation.
Overheating / Thermal Cut-Out Fault
E08
Microwave displays E08 and may not accept certain cooking modes or power levels.
Control Panel / Keypad Communication Fault
E09
Microwave shows E09 and may not start or may shut off immediately after pressing Start.
Door Latch / Lock Detection Fault
E10
Microwave displays E10 and some automatic or combination functions are disabled.
Cavity Temperature Sensor Fault (Combination / Convection Models)
E11
Microwave shows E11 and convection fan or grill functions may not operate correctly.
Convection Fan / Grill Circuit Fault (Combination Models)
E12
Microwave displays E12 and may randomly reset or lose clock settings.
Low Voltage / Power Supply Input Fault
E13
Microwave shows E13 and may not respond to some sensor or auto functions.
Steam / Moisture Sensor Calibration Error
E14
Microwave displays E14 and may lock up or become unresponsive until power is cycled.
Internal Communication Error (Control Board / Display Board)
E15
Microwave shows E15 and may not start; sometimes accompanied by beeping and frozen display.
Software / EEPROM Configuration Error
Symptom
Control panel buttons are unresponsive or respond intermittently; display is on.
Touch Panel / Keypad Failure
Symptom
Microwave cavity light and fan work, but the turntable and heating do not start when pressing Start.
Primary Interlock / Power Feed Interruption
Symptom
Microwave combination or convection modes do not heat, but standard microwave mode works.
Convection / Grill Heating Failure (Combination Models)
Symptom
Microwave completely dead; no display, no interior light, no response to buttons.
No Power / Primary Power Supply Failure
Symptom
Microwave display is dim, flickering, or partially missing segments, but cooking still works.
Display Module Degradation
Symptom
Microwave does not start at all; display is lit and buttons respond, but pressing Start does nothing.
Start Circuit / Door Interlock Inhibit
Symptom
Microwave door does not close fully or pops open during operation.
Door Alignment / Latch Failure
Symptom
Microwave door glass or inner panel becomes very hot to the touch during normal microwave-only operation.
Door Heat Insulation / Ventilation Problem
Symptom
Microwave door will not open or is very hard to open after cooking.
Door Latch / Release Mechanism Binding
Symptom
Microwave emits a strong burning or electrical smell during or after use.
Overheating Component or Cavity Contamination
Symptom
Microwave fan continues to run for a long time after cooking has finished.
Cooling Fan Overrun / Thermostat Control
Symptom
Microwave interior accumulates heavy condensation or water droplets during normal use.
Excessive Condensation / Ventilation Issue
Symptom
Microwave interior light does not turn on, but the unit heats and operates normally.
Cavity Lamp Failure
Symptom
Microwave interior light, fan, and turntable run when the door is closed, even without pressing Start.
Stuck Relay or Door Switch Miswiring
Symptom
Microwave is excessively noisy during operation (rattling, vibrating, or metallic noises).
Mechanical Vibration / Loose Components
Symptom
Microwave makes loud grinding or scraping noises when the turntable rotates.
Turntable Support / Coupler Wear
Symptom
Microwave produces loud buzzing, humming, or crackling noises during operation, sometimes accompanied by a burning smell.
High-Voltage Component Stress / Arcing
Symptom
Microwave runs but does not heat food; turntable and light operate normally, no error code displayed.
No-Heat Condition (High Voltage System Failure)
Symptom
Microwave runs only when the door is slightly lifted or pressed; stopping when you release pressure on the door.
Intermittent Door Interlock Contact
Symptom
Microwave stops mid-cycle and resets or loses time settings.
Power Interruption / Overheat Protection
Symptom
Microwave takes much longer than usual to heat food; performance is weak.
Reduced Output Power
Symptom
Microwave trips the home circuit breaker or blows a fuse when starting or a few seconds into cooking.
Short Circuit / Overcurrent Condition
Symptom
Microwave turntable does not rotate, but heating still occurs.
Turntable Drive Failure
Symptom
Visible sparks or arcing inside the microwave cavity during cooking.
Cavity Arcing / Load Misuse
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Microwave will not start; display shows E01 shortly after pressing Start.
|
Door Interlock Safety Circuit Fault | View Details |
| E02 |
Microwave stops heating shortly after start and displays E02.
|
Magnetron Overheat / Cooling System Fault | View Details |
| E03 |
Microwave does not heat and shows E03 on the display.
|
Magnetron / High Voltage Circuit Fault | View Details |
| E04 |
Microwave stops and displays E04, often when using sensor cooking or auto programs.
|
Humidity / Steam Sensor Fault | View Details |
| E05 |
Microwave shows E05 and will not start or stops shortly after starting.
|
Inverter / Power Supply Fault (Inverter Models) | View Details |
| E06 |
Microwave displays E06 and does not heat, though the turntable and light may operate.
|
Relay / Power Output Control Fault | View Details |
| E07 |
Microwave shows E07 and may shut down unexpectedly during operation.
|
Overheating / Thermal Cut-Out Fault | View Details |
| E08 |
Microwave displays E08 and may not accept certain cooking modes or power levels.
|
Control Panel / Keypad Communication Fault | View Details |
| E09 |
Microwave shows E09 and may not start or may shut off immediately after pressing Start.
|
Door Latch / Lock Detection Fault | View Details |
| E10 |
Microwave displays E10 and some automatic or combination functions are disabled.
|
Cavity Temperature Sensor Fault (Combination / Convection Models) | View Details |
| E11 |
Microwave shows E11 and convection fan or grill functions may not operate correctly.
|
Convection Fan / Grill Circuit Fault (Combination Models) | View Details |
| E12 |
Microwave displays E12 and may randomly reset or lose clock settings.
|
Low Voltage / Power Supply Input Fault | View Details |
| E13 |
Microwave shows E13 and may not respond to some sensor or auto functions.
|
Steam / Moisture Sensor Calibration Error | View Details |
| E14 |
Microwave displays E14 and may lock up or become unresponsive until power is cycled.
|
Internal Communication Error (Control Board / Display Board) | View Details |
| E15 |
Microwave shows E15 and may not start; sometimes accompanied by beeping and frozen display.
|
Software / EEPROM Configuration Error | View Details |
| – |
Control panel buttons are unresponsive or respond intermittently; display is on.
|
Touch Panel / Keypad Failure | View Details |
| – |
Microwave cavity light and fan work, but the turntable and heating do not start when pressing Start.
|
Primary Interlock / Power Feed Interruption | View Details |
| – |
Microwave combination or convection modes do not heat, but standard microwave mode works.
|
Convection / Grill Heating Failure (Combination Models) | View Details |
| – |
Microwave completely dead; no display, no interior light, no response to buttons.
|
No Power / Primary Power Supply Failure | View Details |
| – |
Microwave display is dim, flickering, or partially missing segments, but cooking still works.
|
Display Module Degradation | View Details |
| – |
Microwave does not start at all; display is lit and buttons respond, but pressing Start does nothing.
|
Start Circuit / Door Interlock Inhibit | View Details |
| – |
Microwave door does not close fully or pops open during operation.
|
Door Alignment / Latch Failure | View Details |
| – |
Microwave door glass or inner panel becomes very hot to the touch during normal microwave-only operation.
|
Door Heat Insulation / Ventilation Problem | View Details |
| – |
Microwave door will not open or is very hard to open after cooking.
|
Door Latch / Release Mechanism Binding | View Details |
| – |
Microwave emits a strong burning or electrical smell during or after use.
|
Overheating Component or Cavity Contamination | View Details |
| – |
Microwave fan continues to run for a long time after cooking has finished.
|
Cooling Fan Overrun / Thermostat Control | View Details |
| – |
Microwave interior accumulates heavy condensation or water droplets during normal use.
|
Excessive Condensation / Ventilation Issue | View Details |
| – |
Microwave interior light does not turn on, but the unit heats and operates normally.
|
Cavity Lamp Failure | View Details |
| – |
Microwave interior light, fan, and turntable run when the door is closed, even without pressing Start.
|
Stuck Relay or Door Switch Miswiring | View Details |
| – |
Microwave is excessively noisy during operation (rattling, vibrating, or metallic noises).
|
Mechanical Vibration / Loose Components | View Details |
| – |
Microwave makes loud grinding or scraping noises when the turntable rotates.
|
Turntable Support / Coupler Wear | View Details |
| – |
Microwave produces loud buzzing, humming, or crackling noises during operation, sometimes accompanied by a burning smell.
|
High-Voltage Component Stress / Arcing | View Details |
| – |
Microwave runs but does not heat food; turntable and light operate normally, no error code displayed.
|
No-Heat Condition (High Voltage System Failure) | View Details |
| – |
Microwave runs only when the door is slightly lifted or pressed; stopping when you release pressure on the door.
|
Intermittent Door Interlock Contact | View Details |
| – |
Microwave stops mid-cycle and resets or loses time settings.
|
Power Interruption / Overheat Protection | View Details |
| – |
Microwave takes much longer than usual to heat food; performance is weak.
|
Reduced Output Power | View Details |
| – |
Microwave trips the home circuit breaker or blows a fuse when starting or a few seconds into cooking.
|
Short Circuit / Overcurrent Condition | View Details |
| – |
Microwave turntable does not rotate, but heating still occurs.
|
Turntable Drive Failure | View Details |
| – |
Visible sparks or arcing inside the microwave cavity during cooking.
|
Cavity Arcing / Load Misuse | View Details |
No matching codes found
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