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The Ultimate Guide to Bosch Washer Error Codes: Troubleshooting and Fixes

Washing machines have become an essential part of modern life, but like all appliances, they can sometimes experience issues. Bosch, a leading name in home appliances, has designed their washing machines with error codes to help users diagnose problems quickly. These codes can appear intimidating initially, but understanding them can save you both time and money.

In this comprehensive guide, we will cover everything you need to know about Bosch washer error codes, including how to read them, common error codes and their fixes, and frequently asked questions.


  • How to Read Bosch Washer Error Codes
  • Common Bosch Washer Error Codes and Fixes
  • Frequently Asked Questions (FAQs)

How to Read Bosch Washer Error Codes

Bosch washer error codes can be read differently depending on the type of machine you have.

Digital Display

For models with a digital display, error codes will begin with an 'E' or 'F' followed by a two-digit number. These codes help to pinpoint the exact issue your machine might be facing.

Older Machines

In older models without a digital display, flashing lights indicate the error code. The pattern and color of the lights correspond to specific issues and can be cross-referenced with your machine's manual.

Understanding these codes is the first step towards troubleshooting and fixing any issues with your Bosch washing machine.


How to Read Bosch Washer Error Codes

Understanding and interpreting Bosch washer error codes can be the key to identifying what's going wrong with your appliance. Here's a simple guide to reading these codes, broken down into two categories based on the model and display type.

Digital Display: E or F followed by a Two-Digit Number

Most modern Bosch washing machines come with a digital display that shows error codes beginning with an "E" or "F," followed by a two-digit number. For example:

  • E3 or F3: Door lock error
  • E18 or F18: Pump or drain timed out due to blocked drain hose

These codes are usually quite clear and will relate directly to specific issues within the machine.

Older Machines: Flashing Lights Indicate the Error Code

For older Bosch models without a digital display, understanding the error code can be a bit trickier. The machine might use flashing lights, sounds, or a combination of both to indicate a specific error. The manual for your particular model will explain what each flashing light or sound pattern means.

Keep in mind that not all errors will completely halt the machine's operation. Some may just be warnings or informational codes that don't require immediate action.

Quick Tips:

  • Note the Error Code: As soon as you see an error code, write it down. This will be invaluable for troubleshooting or if you need to call a technician.
  • Consult the Manual: Your washer's manual will usually contain a detailed explanation of each code and might include troubleshooting tips.
  • Perform a Basic Inspection: Sometimes, error codes can be caused by simple issues like a loose connection or clogged filter. Check these first before diving into more complex troubleshooting.

Figuring out what these error codes say might initially seem overwhelming, but with this guide and your manual in hand, you'll be well-equipped to diagnose and resolve many common problems.

E3 - Door Lock Error

  • Problem: The washing machine can't lock the door.
  • Fix: Check the door for obstructions and make sure it's properly closed. If the problem persists, the lock mechanism may need replacement.

F01 - Water Not Filling

  • Problem: The machine detects that water isn't filling properly.
  • Fix: Inspect the water supply hoses for kinks or clogs. Check the inlet valve filter and clean if necessary.

F02 - Heating Component Timeout

  • Problem: The heating element isn't reaching the desired temperature in time.
  • Fix: The heating element may be faulty or there might be an issue with the control board. Consult a technician if necessary.

F03 - Washing Machine Taking Too Long to Drain

  • Problem: Water isn't draining as quickly as it should.
  • Fix: Check the drain hose for obstructions and ensure that the pump filter is clean.

F04 - Motor Faulty: No Tacho Signal

  • Problem: The motor isn't sending the required signal to the control board.
  • Fix: Inspect the motor connections and wiring. If everything looks good, the motor may need to be replaced.

F05 - Uncontrolled Motor Startup or High Resistance Connections

  • Problem: The motor is starting unpredictably or there are issues with the connections.
  • Fix: Inspect the wiring and connections to the motor, and replace any damaged components.

F06 - NTC Short Circuit

  • Problem: Short circuit in the temperature sensor circuit.
  • Fix: The temperature sensor or wiring may need replacement. Consult a technician.

F07 - Faulty NTC Circuit Detected

  • Problem: An issue with the temperature sensor circuit is detected.
  • Fix: Check the wiring, connections, and sensor itself. Replacement may be necessary.

F08 - Door was Open when the Program Attempted to Start

  • Problem: The door was open when the wash cycle tried to begin.
  • Fix: Ensure that the door is closed properly before starting the wash cycle.

F09 - Washing Machine is Heating Up Unexpectedly

  • Problem: The washer is heating at an inappropriate time.
  • Fix: This might indicate a problem with the control board or heating element. Consult a technician.

F10 - Communication Error

  • Problem: The control board is having trouble communicating with other components.
  • Fix: Check the wiring and connections between the control board and other parts. Replacement of the control board might be necessary.

F11 - Heat Sink or Motor Control PCB Overheated

  • Problem: Overheating detected in the heat sink or motor control board.
  • Fix: Ensure proper ventilation and cooling. Consult a technician if the problem persists.

F12 - Short Circuit or Faulty Motor

  • Problem: A short circuit or fault detected in the motor.
  • Fix: Inspect the motor's wiring and connections, or consult a technician.

F13 - Mains Voltage Too High

  • Problem: The mains voltage is higher than expected.
  • Fix: Check the power supply, and consult an electrician if necessary.

F14 - Mains Voltage Too Low

  • Problem: The mains voltage is lower than expected.
  • Fix: Check the power supply, and consult an electrician if necessary.

F15 - Faulty Temperature Sensor on the Motor PCB

  • Problem: The temperature sensor on the motor's control board is faulty.
  • Fix: The sensor or control board may need replacement. Consult a technician.

F16/E16 - Door is Open

  • Problem: The door is open during the wash cycle.
  • Fix: Ensure that the door is closed properly before starting the wash cycle.

F17/E17 - Inlet Valve Issue

  • Problem: The inlet valve is not working correctly.
  • Fix: Check the valve for obstructions or damage, and clean or replace as needed.

F18/E18 - Pump or Drain Timed Out Due to Blocked Drain Hose

  • Problem: The drain pump or hose is blocked.
  • Fix: Check and clean the drain hose and pump filter.

F19/E19 - Heating Time Exceeded

  • Problem: The washing machine is taking too long to heat the water.
  • Fix: The heating element or control board may be faulty. Consult a technician.

F20/E20 - Heating Fault Detected

  • Problem: A fault has been detected in the heating system.
  • Fix: The heating element or control board may need replacement. Consult a technician.

E23/F23 - Water Detected in the Base Trough Due to Leaking

  • Problem: Water leak detected in the base of the washing machine.
  • Fix: Check for leaks in hoses and connections. Consult a technician if necessary.

E27 - Malfunction of the Pressure System

  • Problem: There's a malfunction in the pressure system.
  • Fix: Check the pressure switch and related components. Consult a technician if necessary.

E28/F28 - Flow Sensor Issue

  • Problem: The flow sensor is not working correctly.
  • Fix: Check the sensor and its wiring. Replacement may be necessary.

F42, F43, F44 - Motor Fault Indicated

  • Problem: Various motor faults detected.
  • Fix: Check the motor and its connections, or consult a technician.

E56 - Unexpected Communication Error

  • Problem: Unexpected communication error within the machine.
  • Fix: Check the connections between different components, or consult a technician.

Frequently Asked Questions (FAQs)

In this section, we'll answer some common questions that may arise when dealing with Bosch washer error codes and troubleshooting.

Do Bosch Washing Machines Have a Reset Button?

Yes, most Bosch washing machines have a reset button that can be used to clear specific error codes. To perform a reset, consult your user manual as the procedure may vary depending on the model. Generally, unplugging the machine for a few minutes and then reconnecting it may also clear the error.


Why is My Bosch Washing Machine Beeping and Not Starting?

A beeping sound accompanied by an error code usually indicates a specific issue, such as a door lock error or a water inlet problem. Refer to the error code guide to identify the problem and take the necessary steps to fix it.


Why is My Bosch Washing Machine Not Spinning?

Not spinning could be a result of various issues, including a faulty motor, a problem with the belt, or an unbalanced load. Error codes like F04, F05, or F06 might point to the underlying cause, allowing you to diagnose and fix the issue.


How Do You Clean the Filter on a Bosch Washing Machine?

Cleaning the filter is essential for smooth operation. Locate the filter, usually found at the front bottom of the machine, and carefully unscrew it. Remove any debris and rinse the filter under running water before reinserting it.


How Do I Open My Locked Bosch Washing Machine Door?

If the door is locked due to an error, you may need to perform a reset or wait for a few minutes after the cycle has ended. Some models have an emergency release lever inside the detergent dispenser or near the filter. Consult your manual for specific instructions.


How Do You Clear the Error Code on a Bosch Washing Machine?

Clearing an error code may require resolving the underlying problem first. Once the issue is fixed, the error code can often be cleared by performing a reset or unplugging the machine for a short period. Refer to your user manual for model-specific instructions.


We hope this guide provides you with a clear understanding of Bosch washer error codes and helps you to troubleshoot and fix common problems with your machine. Always remember to consult your user manual first and then go into the internet. If you can’t seem to figure out the problem, give us a call at +1 (832) 979-8949 and let us take a look.

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