Bosch washing machine errors (Bosch): fault codes

The German company Bosch, which produces washing machines and other household appliances, has been on the world market for more than 30 years. During this time, their products have gone through more than one stage of modernization and improvement. So, modern models of Bosch washing machines are equipped with a user notification system about emerging problems and malfunctions. This is done by displaying the code that corresponds to a particular malfunction on the display. It is important that fault codes cannot provide accurate information about a specific problem. But deciphering the code gives an indication of the area where the problem occurs.

Types of modern Bosch washing machines

For different models of Bosch washing machines, the classification of codes may vary slightly or have different encryption. Among the washing machines of this company presented on the modern market, the following main models are distinguished:

Classixx;
Avantixx;
Maxx;
Logixx;
Home Professional.

Error codes

Below is a unified classification of various error codes for Bosch washing machines. It logically divides all error codes into specific groups.

Errors in the main control system.

D09 – failure of the running program;
D20 – water filling errors;
D24, D28 – damage to the motherboard;
D29, D30, D31, D32 - various types of interference, usually eliminated by restarting the washing machine;
F10 - The electric motor cannot communicate with the control module;
F11 – stop or failure of the selected program;
F21 – drum stop, inability to start;
F24 – lack of communication between Aqua-Stop and the control module;
F32 – lack of communication between the control module and the UBL;
F42 – excess engine speed;
F44 – reverse relay errors;
F63 – software crashed;
F67, E67 – incorrect coding of the control card.

The reasons for these errors to appear on the washing machine screen may be damage to various parts of the control system: motherboard, processor, tachogenerator, control card (module) and others. It is important that errors associated with incorrect control card encoding indicators may be a factory defect, therefore, if the washing machine has such indicators, you need to call a specialist.

Errors in the hatch locking device (abbreviated as UBL).

D07 – UBL malfunction;
F01, F08, F16, F36 – the hatch door is not closed;
F32 – lack of communication between the UBL and the control module;
F34 – UBL malfunction;
F61 – incorrect UBL indicators.

Perhaps this error was displayed due to the fact that the hatch door was not completely closed.

Errors in the water heating system.

D05 – damage to the thermostat or wiring;
D03, F38 – heating element failures;
F06 – water overheating;
F07 – water does not heat up to the required temperature;
F15, F20 – errors in water temperature indicators;
F19 – heating system errors;
F22, F37 – NTC sensor malfunction;
F25 – Aqua sensor error.

Such readings may appear due to voltage surges, breakdowns of the temperature sensor, heating element, damage to the motherboard, or improper operation of the thermostat.

Water supply system errors.

D01, F30, F31 – water level sensor errors;
D02, F28, F29 – water sensor errors;
D03 – malfunction of the drain system;
D08 – damage to the recirculation pump;
D10 – Aqua-stop errors;
F04 – water leak;
F02, F17 – error of water entering the machine;
F03, F18 – error of water draining from the machine;
F23 - unscheduled activation of Aqua-stop;
F25 – Aqua sensor error;
F59 – 3D sensor errors;
F60 - water flow sensor errors.

Errors in this system occur due to a malfunction of the electronic control module of the drainage system, the water supply and drainage system, damage to the pressure switch, pump, pump or EM valve, long time for collecting and draining water (more than 10 minutes), and changes in water pressure. Otherwise, it may simply be a failure of indicators that is in no way related to damage to the water supply system.

Errors associated with a malfunction of the electric motor.

D04 – malfunction in the motor;
D06 – Tacho sensor errors;
D13 – electric motor malfunction;
F05 – damage to the electric motor command apparatus;
F12 – failure or stop of the selected program;
F26, F27 – pressure sensor errors;
F42 – excess engine speed;
F43 – engine stop, inability to start;
F44 – reverse relay errors.

Other error codes.

D17 – damage to the drum or belt;
F13 – increase in mains voltage;
F14 – decrease in mains voltage;
F40 – automatic synchronization errors (power supply does not comply with permitted standards).

It is important that power surges have a very bad effect on the condition of the washing machine, so this problem must be corrected immediately.And you should not rely on the protection system against power surges in modern Bosch models; the more often it operates, the greater the likelihood of its failure, and, accordingly, the device as a whole.

Procedure

Fault diagnosis is carried out using service testing. This is better than searching for the entire circuit of a faulty device, which takes too much time and is quite low in terms of efficiency. Test mode starts as follows:

Close the hatch door
Set the wheel - a large round button for selecting a program - to “OFF” (can also be designated “off” or “0”), wait a few seconds
Turn the wheel clockwise until the “spin” mark
Hold down the "<" button
Turn the wheel further to the “drain” mark
Release the "<" button

At the last action, the latest malfunction of the washing machine should be displayed, as well as the error code. Using the “<” and “>” buttons, you need to select a test to check the area of the washing machine you need and press the “start” button.

Knowing the fault coding of Bosch washing machines, you can independently detect the problem area and take measures to eliminate the problem. However, many of them require calling service center specialists.

You can reset the error by disconnecting the washing machine from the power supply. Sometimes this needs to be done for a while (up to 20 minutes). This is due to the built-in protection system in modern Bosch washing machines against power surges, including short-term power outages.