Bosch Oven Error Codes

Complete Bosch Oven Guide

This guide explains all Bosch Oven error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

E01 / E02
Lint Filter Blocked
  • Remove and clean lint filter thoroughly.
  • Check filter housing for lint buildup.
  • Ensure filter is properly reinserted.
  • Restart dryer cycle after cleaning.
E03
Drain Hose Blocked
  • Inspect drain hose for blockages or kinks.
  • Check water outlet path for obstruction.
  • Clean hose if necessary.
  • Ensure proper water drainage flow.
E04
Overload Detected
  • Reduce load size inside drum.
  • Separate heavy and light fabrics.
  • Ensure drum can rotate freely.
  • Restart dryer after adjusting load.
E06
Heating Circuit Fault
  • Check heating element for damage.
  • Inspect thermal fuse condition.
  • Test wiring connections.
  • Replace heater assembly if faulty.
E08
Control Board Fault
  • Reset dryer by unplugging for 10 minutes.
  • Inspect PCB for burn marks or damage.
  • Check wiring connections.
  • Replace control board if necessary.
E09
Heater Circuit Error
  • Inspect heater circuit wiring.
  • Check thermal fuse and thermostat.
  • Test heater resistance.
  • Replace faulty heating components.
E12
Heat Pump Blockage
  • Clean heat pump and condenser unit.
  • Remove lint buildup inside system.
  • Check airflow path for obstruction.
  • Restart dryer after cleaning.
E16
Door Switch Error
  • Ensure door is fully closed and latched.
  • Inspect door switch mechanism.
  • Check wiring connections.
  • Replace door switch if faulty.
E24 / E25
Moisture Sensor Fault
  • Clean moisture sensor strips.
  • Remove lint or residue buildup.
  • Check sensor wiring connections.
  • Replace sensor if readings are incorrect.
E28 / E90
PCB Communication Fault
  • Reset dryer power supply.
  • Check wiring harness between modules.
  • Inspect PCB connectors.
  • Replace control board if issue persists.
E56
Moisture Sensor Fault
  • Clean moisture sensor bars.
  • Check for lint buildup.
  • Inspect wiring connection.
  • Replace sensor if needed.
E63
Heating Element Failure
  • Inspect heating element for damage.
  • Test electrical continuity.
  • Check thermostat and fuse.
  • Replace heating element if faulty.
E01 / E02
Control Board Communication Error
  • Reset oven power for 5–10 minutes.
  • Check wiring between control modules.
  • Inspect PCB for damage or moisture.
  • Replace control board if needed.
E03
Temperature Sensor Fault
  • Check oven temperature probe connection.
  • Test sensor resistance.
  • Clean sensor area inside oven cavity.
  • Replace sensor if readings are incorrect.
E04
Heating Element Failure
  • Inspect bake and broil elements.
  • Check for visible damage or burn marks.
  • Test continuity with multimeter.
  • Replace heating element if faulty.
E05
Door Lock Error
  • Check oven door latch alignment.
  • Inspect door lock motor.
  • Ensure nothing blocks door closing.
  • Replace lock mechanism if needed.
E06
Overheating Protection Triggered
  • Turn off oven immediately.
  • Check ventilation system.
  • Inspect cooling fan operation.
  • Allow oven to cool before restart.
E07
Cooling Fan Fault
  • Check fan motor operation.
  • Inspect wiring connections.
  • Remove dust or grease buildup.
  • Replace fan motor if faulty.
E08
Power Supply Issue
  • Check circuit breaker.
  • Ensure stable power supply.
  • Avoid extension cords.
  • Inspect power wiring.
E09
Internal Communication Error
  • Reset oven power.
  • Check wiring harness between boards.
  • Inspect control module connectors.
  • Replace PCB if issue persists.
E10
Sensor Calibration Error
  • Reset oven system.
  • Recalibrate temperature settings.
  • Check sensor placement.
  • Replace sensor if unstable readings occur.
E11
Door Switch Fault
  • Ensure door is fully closed.
  • Inspect door switch mechanism.
  • Check wiring connection.
  • Replace switch if defective.
E12
Oven Fan Motor Fault
  • Check convection fan operation.
  • Remove grease or blockage.
  • Inspect motor wiring.
  • Replace fan motor if needed.
E13
Self-Cleaning System Error
  • Reset oven cycle.
  • Check door lock during cleaning mode.
  • Ensure cooling fan works properly.
  • Restart self-clean cycle.
E14
Overtemperature in Cavity
  • Turn off oven immediately.
  • Check thermostat sensor.
  • Inspect heating element stuck ON.
  • Replace faulty components.
E15
Display / UI Control Fault
  • Reset oven power.
  • Check control panel connections.
  • Inspect moisture or damage.
  • Replace UI module if needed.

Frequently Asked Questions


Why is my Bosch oven not heating?
Check if the oven is set to the correct mode and temperature. Inspect heating element for damage. Ensure power supply is stable. Reset oven if needed.
Why is my Bosch oven not turning on?
Check power connection and circuit breaker. Ensure door is fully closed. Verify control panel settings. Try resetting the oven.
Why is my Bosch oven not cooking evenly?
Avoid overcrowding racks. Use correct rack position. Calibrate temperature settings if needed. Ensure fan (convection) is working properly.
Why is my Bosch oven taking too long to preheat?
Check heating element performance. Ensure door is closed tightly. Avoid opening door during preheat. Inspect thermostat accuracy.
Why is my Bosch oven door not closing properly?
Inspect door hinges for damage. Check gasket seal condition. Remove any obstruction. Adjust alignment if needed.
Why is my Bosch oven making noise?
Normal fan noise may occur during convection mode. Check fan for debris or damage. Inspect internal components if noise is unusual.
Why is my Bosch oven showing an error code?
Restart oven to reset system. Check manual for specific error code meaning. Inspect sensors and wiring if error persists. Call technician if needed.
Why is my Bosch oven temperature not accurate?
Calibrate temperature settings. Check thermostat sensor. Avoid frequent door opening. Replace faulty temperature probe if needed.
Why is my Bosch oven smoking?
Remove grease or food residue inside oven. Avoid overheating oil or fat. Clean oven regularly. Ensure correct cooking settings.
Why is my Bosch oven light not working?
Replace oven bulb if blown. Check light socket connection. Ensure oven is switched off before replacing bulb. Inspect wiring if still not working.
Why is my Bosch oven fan not working?
Check fan motor operation. Inspect wiring connections. Clean fan blades from grease buildup. Replace fan motor if faulty.
How do I reset my Bosch oven?
Turn off oven and unplug or switch off breaker for 5–10 minutes. Restore power and restart settings. Check if issue is cleared after reset.
Why does my Bosch oven smell bad?
Clean food residue and grease buildup. Run a self-clean cycle if available. Ensure proper ventilation. Remove leftover spills inside oven.
Why does my Bosch oven keep shutting off?
Check overheating protection system. Inspect thermostat and sensors. Ensure stable power supply. Reset oven and test again.
What should I do if Bosch oven error codes keep appearing?
Reset oven system and clean components. Check sensors and wiring. Ensure proper ventilation. Contact technician if errors persist.
Important: Always disconnect power before performing repairs. Contact a qualified technician if the issue persists.