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Bosch Appliance Error Codes

Expert reference guide covering all Bosch appliance diagnostic codes with comprehensive troubleshooting procedures and professional repair guidance for US households

Quickly identify problems with your Bosch dishwasher, refrigerator, washer, or dryer and learn the correct response procedures

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Understanding Bosch Diagnostic Codes

Bosch appliances are equipped with advanced diagnostic systems that help identify operational issues. When a problem occurs, the appliance often displays an error code on its digital display. These codes are crucial for quickly understanding the nature of the fault and determining the appropriate troubleshooting steps. This guide provides a comprehensive list of common Bosch error codes for dishwashers, refrigerators, washers, and dryers, along with their meanings, possible causes, and recommended solutions. Always consult your specific appliance's user manual for precise code definitions and safety instructions. For complex issues or if an error persists, it is recommended to contact a certified appliance technician.

Dishwasher Error Codes

Common error codes for Bosch dishwashers.

Code	Meaning	Possible Causes	Solutions
E15	Water Leak Detected - Water detected in bottom pan	•Water leak in dishwasher •Float switch activated •Overflow condition •Drain issue •Seal failure	Stop cycle immediately Check for water leaks Inspect drain system Check door seal If error persists, contact Bosch service technician immediately This may indicate a serious problem requiring immediate attention
E24	Drain Problem - Drain issue detected	•Clogged drain hose •Drain pump obstruction •Kinked drain hose •Drain pump failure •Drain filter blockage	Check drain hose for kinks or clogs Inspect drain pump for obstructions Check drain filter Test drain pump operation If error persists, contact Bosch service Drain pump may need replacement
E25	Pump Blocked - Pump is blocked	•Pump obstruction •Foreign objects in pump •Pump impeller blocked •Drain pump failure	Clean pump and remove foreign objects Inspect pump impeller Check for obstructions If error persists, contact Bosch service technician Pump may need replacement
E09	Heating Problem - Heating system error	•Faulty heating element •Heating element wiring issue •Temperature sensor error •Control board error	Check heating element connections Test heating element operation If error persists, contact Bosch service technician Heating element may need replacement Professional diagnosis required
E01	Water Inlet Error - Water supply problem	•Water supply valve closed •Low water pressure •Clogged water inlet filter •Faulty water inlet valve	Check water supply valve is fully open Verify water pressure is adequate Inspect water supply hoses Clean water inlet filter screens If error persists, contact Bosch service
E02	Water Level Error - Water level problem	•Faulty water level sensor •Sensor wiring issue •Control board error •Water level sensor malfunction	Check water level sensor connections Test sensor operation If error persists, contact Bosch service technician Water level sensor may need replacement
E03	Temperature Sensor Error - Temperature sensor malfunction	•Faulty temperature sensor •Sensor wiring issue •Sensor out of range	Check temperature sensor connections Test sensor operation If error persists, contact Bosch service technician Temperature sensor may need replacement

Washing Machine Error Codes

Common error codes for Bosch washing machines.

Code	Meaning	Possible Causes	Solutions
E16 / F16	Door Not Closed - Door is not properly closed	•Door not fully closed •Faulty door switch •Door switch wiring issue •Obstruction preventing door closure •Door seal issue	Ensure door is fully closed Check for obstructions preventing door closure Test door switch operation Inspect door seal If door switch is faulty, contact Bosch service
E17 / F17	Water Inlet Error - Water supply problem	•Water supply valve closed •Low water pressure •Clogged water inlet filter •Faulty water inlet valve •Kinked water supply hose	Check water supply valves are fully open Verify water pressure is adequate Inspect water supply hoses for kinks or damage Clean water inlet filter screens Test water inlet valve operation If error persists, contact Bosch service
E18 / F18	Drain Error - Cannot drain water	•Clogged drain hose •Drain pump obstruction •Kinked drain hose •Drain pump failure •Drain filter blockage	Check drain hose for kinks or clogs Clean drain filter if accessible Inspect drain pump for obstructions Test drain pump operation If error persists, contact Bosch service
E23 / F23	Water Leak Detected - Water detected in bottom pan	•Water leak in washer •Float switch activated •Overflow condition •Drain issue •Seal failure	Stop cycle immediately Check for water leaks Inspect drain system If error persists, contact Bosch service technician immediately This may indicate a serious problem requiring immediate attention
E01	Control Board Error - Control board malfunction	•Control board failure •EEPROM error •Memory corruption	Unplug washer for 5 minutes and restart If error persists, contact Bosch service technician Control board may need replacement
E02	Motor Error - Motor malfunction	•Motor failure •Motor control board error •Motor wiring issue	Unplug washer for 5 minutes and restart Check motor connections If error persists, contact Bosch service technician Motor may need replacement
E03	Temperature Sensor Error - Temperature sensor malfunction	•Faulty temperature sensor •Sensor wiring issue •Sensor out of range	Check temperature sensor connections Test sensor operation If error persists, contact Bosch service technician Temperature sensor may need replacement

Dryer Error Codes

Common error codes for Bosch dryers.

Code	Meaning	Possible Causes	Solutions
E01	Door Not Closed - Door is not properly closed	•Door not fully closed •Faulty door switch •Door switch wiring issue •Obstruction preventing door closure	Ensure door is fully closed Check for obstructions preventing door closure Test door switch operation If door switch is faulty, contact Bosch service
E03	Restricted Airflow - Air passages blocked	•Clogged lint screen •Blocked exhaust vent •Kinked exhaust hose •Exhaust vent obstruction •Insufficient ventilation	Clean lint screen thoroughly Check exhaust vent for blockages, kinks, or obstructions Inspect exhaust hose for damage Ensure adequate ventilation around dryer If error persists, contact Bosch service technician Exhaust vent may need cleaning or repair
E06	Temperature Sensor Error - Temperature sensor defective	•Faulty temperature sensor •Sensor wiring issue •Sensor out of range •Sensor calibration error	Check temperature sensor connections Test sensor resistance If error persists, contact Bosch service technician Temperature sensor may need replacement Professional diagnosis recommended
E09	Heating Problem - Heating system error	•Faulty heating element •Heating element wiring issue •Temperature sensor error •Control board error •Heating element failure	Check heating element connections Test heating element operation If error persists, contact Bosch service technician Heating element may need replacement Professional diagnosis required
E02	Motor Error - Motor malfunction	•Motor failure •Motor control board error •Motor wiring issue	Unplug dryer for 5 minutes and restart Check motor connections If error persists, contact Bosch service technician Motor may need replacement
E04	Control Board Error - Control board malfunction	•Control board failure •EEPROM error •Memory corruption	Unplug dryer for 5 minutes and restart If error persists, contact Bosch service technician Control board may need replacement

Refrigerator Error Codes

Common error codes for Bosch refrigerators.

Code	Meaning	Possible Causes	Solutions
E1	Refrigerator Temperature Sensor Error - Error in refrigerator compartment temperature sensor	•Faulty refrigerator temperature sensor •Sensor wiring issue •Sensor out of range •Open or short circuit in sensor	Check refrigerator temperature sensor connections Test sensor resistance with multimeter If error persists, contact Bosch service technician Refrigerator temperature sensor may need replacement
E2	Freezer Temperature Sensor Error - Error in freezer compartment temperature sensor	•Faulty freezer temperature sensor •Sensor wiring issue •Sensor out of range •Open or short circuit in sensor	Check freezer temperature sensor connections Test sensor resistance with multimeter If error persists, contact Bosch service technician Freezer temperature sensor may need replacement
E3	Defrost Sensor Error - Error in defrost sensor	•Faulty defrost sensor •Sensor wiring issue •Defrost system malfunction	Check defrost sensor connections Test defrost system operation If error persists, contact Bosch service technician Defrost sensor may need replacement
E4	Fan Error - Error in fan motor or fan system	•Faulty fan motor •Fan obstruction •Fan wiring issue •Fan motor failure	Check for fan obstructions Test fan motor operation Inspect fan blades for damage If error persists, contact Bosch service technician Fan motor may need replacement
E5	Communication Error - Communication error between display and control board	•Wiring harness issue •Control board communication failure •Display board error •Loose connections	Unplug refrigerator for 5 minutes and restart Check wiring connections If error persists, contact Bosch service technician Control board may need replacement
PF	Power Failure - Power outage or voltage fluctuation detected	•Power interruption •Electrical outage •Circuit breaker tripped •Voltage fluctuation	Check circuit breaker Verify power supply is restored Restart refrigerator If problem persists, check electrical connection

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Critical Safety Notice

Attempting DIY repairs on Bosch appliances, especially those involving electrical components, water lines, or gas connections, can be dangerous and may void your warranty. Specific issues like control board failures, motor problems, or sealed system leaks (refrigerators) require professional expertise. Always prioritize safety: disconnect power before any inspection, and for complex or safety-critical error codes, contact a certified appliance technician.

Professional service is highly recommended—contact a licensed appliance repair technician for expert assistance.

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Maintenance Guidelines for Bosch Appliances

Scheduled Maintenance

✓Clean washing machine detergent dispenser and tub monthly
✓Clean dryer lint screen after every load and exhaust vent annually
✓Clean refrigerator condenser coils every 6-12 months
✓Check dishwasher spray arms and filter monthly for blockages
✓Inspect water supply hoses for leaks or damage annually

Proactive Care Tips

✓Avoid overloading washing machines and dryers
✓Use appropriate detergent amounts to prevent oversudsing
✓Ensure refrigerator doors seal properly to maintain temperature
✓Pre-rinse dishes before loading into the dishwasher to prevent clogs
✓Address minor issues promptly to prevent larger problems

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Frequently Asked Questions

What does error code E15 mean on my Bosch dishwasher?

E15 indicates water detected in the bottom pan. This is a critical error. Stop the cycle immediately and check for water leaks. Inspect the drain system and check the door seal. If the error persists, contact a Bosch service technician immediately as this may indicate a serious problem requiring immediate attention.

My Bosch washer shows E16 / F16. What should I do?

Error code E16 / F16 on a Bosch washer means the door is not properly closed. Ensure the door is fully closed, check for obstructions preventing door closure, test door switch operation, and inspect the door seal. If the door switch is faulty, contact Bosch service.

What does error code E03 mean on my Bosch dryer?

E03 indicates restricted airflow - air passages are blocked. Clean the lint screen thoroughly, check the exhaust vent for blockages, kinks, or obstructions, inspect the exhaust hose for damage, and ensure adequate ventilation around the dryer. If the error persists, contact a Bosch service technician as the exhaust vent may need cleaning or repair.

My Bosch dishwasher displays E24. How can I fix it?

Error code E24 on a Bosch dishwasher means there is a drain problem. Check the drain hose for kinks or clogs, inspect the drain pump for obstructions, check the drain filter, and test drain pump operation. If the error persists, contact Bosch service as the drain pump may need replacement.

Is it safe to perform DIY repairs on Bosch appliances?

While some basic troubleshooting like cleaning lint screens or checking water hoses can be done by homeowners, most error codes indicate issues that require professional expertise. Attempting complex repairs, especially those involving electrical or gas components, can be dangerous and may void your warranty. It's always best to consult a certified appliance technician for safety-critical or persistent problems.