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Bosch Dishwasher Mistakes

errors in Bosch dishwasherBosch dishwasher self-diagnosis system is invisibly present in every modern model of such equipment. The user does not encounter such a system until the machine operates normally, as soon as a breakdown occurs, the error codes for Bosch dishwashers appear on the display. Depending on the breakdown, these errors may appear alternately, or only one specific error lights up on the screen, in any case, in order to deal with the problem, you need to decrypt the error code.

Problems with heating water

It is more convenient to consider deciphering the codes of malfunction codes for Bosch dishwashers in two ways: in a table or as part of a classification. We decided that it would be more convenient to divide them into groups according to the nature of the breakdowns, and only then consider the transcripts as if in interconnection. After all, as has already been said, not always a system error "comes to the user alone." We begin to consider error codes and you will understand our idea.

The first group of system errors was entitled by us as "problems with heating the water." This group includes the following codes:

  • E01 (or F01);
  • E2 (or F2);
  • E09 (or F09);
  • E11 (or F11);
  • E12 (or F12).

Note! On some Bosch dishwasher models, the letter of the error code E is replaced by the letter F, and the number is the same.

E01 (or F01). The contacts of the heating element are damaged or the integrity of the heater circuit is broken. If this error pops up on the display, it is likely that the ten burned out and you have to change it. In any case, start the test with the heating element. Together with the heating element, the temperature sensor must be checked.

E2 (or F2). This system error may appear alternately with the error E01. In this case, it indicates a malfunction of the water temperature sensor. In this case, the heating element will operate at full power all the time, since no information will be received from the temperature sensor. To verify the cause of the malfunction, it is necessary to measure the resistance of the contacts of the temperature sensor with a multimeter (it should be approximately 50 kOhm)

errors in Bosch dishwasherE09 (or F09). This code indicates problems with the flow heating element. E09 pops up on those models of dishwashers where the heater is located in the bowels of the circulation pump. You can fix the error by replacing the ten, but first you need to diagnose the unit with a multimeter and make sure that it is faulty.

E11 (or F11). The code indicates that the power is not supplied to the temperature sensor, or the connection between the control module and the temperature sensor is broken. This error also indicates an impressive list of reasons, so you have to check one by one:

  1. temperature sensor contacts;
  2. wiring from the temperature sensor for damage;
  3. control module contacts.

E12 (or F12). This code is displayed on some Bosch dishwasher models if too much scale or dirt has accumulated on the heating element. Sometimes after rebooting the “dishwasher” instead of the E12 code, the E09 code flies, but in any case, this indicates the same problem.

Important! In some "dishwashers" the ten can be removed, cleaned, and then installed again and it will work perfectly.

Problems with draining and filling water

Faults associated with water heating are relatively rare, but error codes informing about problems associated with the discharge and filling of water can be found much more often. We list the codes associated with such malfunctions.

  • E3, F3;
  • E5, F5;
  • E8, F8;
  • E16, F16;
  • E17, F17;
  • E21, F

Code E3 or F3 stops the dishwasher in the event that for a given period of time within the framework of the executable program it was not possible to draw water.In this case, in modern models of “dishwashers”, water self-drains first, and then error E3 or F3 flies on the display. If the Bosch dishwasher model was launched 7-10 years ago, it can happen differently - the unit will first give an error and then wait for the end of the water collection. What can be done in this case?

  1. Check for water in the water supply.
  2. Check if the filters installed in front of the inlet hose and at the entrance to the dishwasher are clogged.
  3. Check the performance of the filling valve.
  4. Check if the water level sensor is working or not.
  5. Lastly, you can see if the pump is working, because in rare cases, such an error pops up because of it.

E5 or F5. The dishwasher tank is full of water. This error occurs when the dishwasher pours more water than necessary, and the water level sensor cannot stop this process in time. So, there are problems with the water level sensor and you need:

  • check for dirt in the tube of the water level sensor;
  • whether the contacts or wiring of the supply sensor are burned;
  • Are there any problems with the filler valve? Perhaps for some reason it does not completely shut off and water continues to flow.

Important! In rare cases, this error is caused by a malfunction in the control unit of the dishwasher. In this case, you need to contact a specialist.

errors in Bosch dishwasherE8 or F8. This error may coexist with another similar error - E3 or F3. The reason is the same, the dishwasher is not able to draw the right amount of water into the pan. This leads to the fact that the circulation pump cannot turn on and work, as well as the heating element itself. To find the cause, follow all the steps necessary to eliminate the E3 or F3 error described above.

E16 or F16. Errors with these codes occur if the dishwasher cannot block the flow of water into the tank. Simply put, there is an uncontrolled self-pouring of water into the car. Most often, this error occurs if debris with tap water gets into the inlet valve and does not allow it to close, so water constantly seeps through it, even if the dishwasher is turned off. What is needed to fix error E16?

  1. Check the filler valve and clean it.
  2. Check the water level sensor (only if water does not flow by gravity with the machine turned off).
  3. Check for excess foam from the detergent (if an error occurred while washing dishes).

E17 or F17. This code indicates problems with the water inlet to the dishwasher. This mistake is narrow-profile and most often means that the inlet valve is difficult to shut off or cannot shut at all due to excessive water pressure. Sometimes a similar error can occur due to water hammer, in this case you do not need to do anything, restart the “dishwasher” and it will work normally. If the pressure in the water supply is always too high, it is necessary to partially shut off the water supply to the riser pipes.

Note! In rare cases, when errors E17, F17 appear, it is necessary to check the sensor measuring the amount of water supplied.

E21 or F21. This code appears on the display in the event that there is a problem with the pump of the dishwasher, and she refuses to drain the water. When this error occurs, power is supplied to the pump, it interacts normally with the control unit and sensors, but it still does not perform its function. What could have happened?

  • The impeller is jammed and it does not rotate (possibly due to foreign objects wrapped around it);
  • The rotor adhered to the walls of the sleeve, it needs to be cleaned and lubricated (in this case, error E21 may be adjacent to error E22);
  • The pump mechanism has been worn and needs to be changed.

Clogging problems

Errors that are associated with blockages of various nature are most often found in Bosch dishwashers.Typically, blockages occur if the user neglects to clean the dishes from the remnants of food, before laying it in the basket for washing. What system errors are associated with blockages?

  1. E07 or F07;
  2. E22 or F22;
  3. E24 or F24;
  4. E25 or F25.

errors in Bosch dishwasherE07 or F07. The streamlined decoding of this code sounds like "a hole is plugged through which water is pumped out." The following may indicate this. The dishes were not stacked correctly, one of the objects closed the hole through which water is pumped out of the dishwasher hopper. Or a suction port plugged a piece of sewage.

E22 or F22. This error indicates that any of the filters in the dishwasher is dirty or there are problems with the pump (if the impeller is difficult to rotate). Error E22 in the Bosch dishwasher, described in more detail in the article of the same name on our site.

E24 or F24. Error F24 has a simple and clear decoding - the drain hose is bent or clogged, the sewer is clogged or the drain outlet of the siphon is blocked. But in fact, the E24 error can occur for the most unexpected reasons. By the way, it may well coexist with error E22. Error E24, is well described on our website in an article with the appropriate name, so we will not repeat.

E25 or F25. This error occurs when the pump nozzle or drain hose is clogged at the very base. That is, the capacity of the drain pump is not enough, in order to push dirty water, the sensors signal this to the control unit, and that in turn displays error E25 and stops the dishwasher. The solution is to clean the nozzle and drain hose from blockages and check the pump impeller.

Note! It happens that the E25 error is adjacent to the E22 error, that is, when the machine reboots, either E25 error or E22 error pops up. In this case, you need to check how freely the impeller of the pump rotates.

Problems with sensors and water switches

The dishwasher is equipped with a sufficiently large number of different sensors that help to monitor and control the implementation of dishwashing programs. When these sensors fail, the self-diagnosis system recognizes this and displays the following errors on the display of the Bosch dishwasher:

  • E4, F4;
  • E6, F6;
  • E14, F14;
  • E15, F

Let's start with the error E4 or F4. It means that the sensor controlling the pressure and flow of water that is supplied to the sprayer does not fulfill its functions. It is either malfunctioning or cannot function normally due to a blockage. It often happens that due to hard water the nozzles of the sprayer become clogged, water through them begins to flow poorly and this leads to an error E4 or F4.

E6 or F6. The water purity sensor is out of order. This is a special sensor that monitors the quality of the water in the dishwasher, which is located next to the heating element. Sometimes it’s possible to give him a second life by changing the burnt contacts, but in 95% of cases he needs to be replaced.

E14 or F14. The sensor that controls the amount of water entering the dishwasher is not working properly. Only a specialist can deal with this problem, perhaps this sensor needs to be replaced.

E15 or F15. This error is displayed on modern dishwashers equipped with the Aquastop system in the event that a leak occurs. Do the following:

  • inspect the dishwasher tray for leaks;
  • inspect the hoses;
  • Inspect other items for leaks.

Electrical problems

errors in Bosch dishwasherDue to the large number of sensors, in a modern dishwasher there is a rather sophisticated electrician. It is enough to burn a terminal or fray one of the many wires, and you will get one of the following errors:

  1. E01, F01;
  2. E27, F27;
  3. E30, F

E01 or F01, as well as E30 or F30. These errors indicate a malfunction in the electrical or electronics of the dishwasher.First of all, it needs to be rebooted from the “on / off” button and the error is most often eliminated. If the error is repeated many times, you need to turn off the device and call the wizard, in order to avoid the occurrence of new problems.

Important! You can try to find the cause of the problem yourself, but then you have to look at all the wiring and terminals, and this is a meticulous and unpleasant job and not the fact that you can find the fault.

E27 or F27. If you connected the dishwasher directly to the mains, you may have to face error E27. The fact is that the voltage drops that periodically occur in the network can have a serious negative effect on electrical appliances, up to their incapacitation. Therefore, if you often encounter error E27 on a Bosch dishwasher, connect it to the network through a voltage regulator and the problem will be solved.

In conclusion, we note that an impressive number of error codes that make up the system of self-diagnosis of dishwasher malfunctions are needed not to rattle the user’s nerves, but to help him cope with the problem of the threatening “home assistant” in time. Examine the code decryption you need, and we hope you can find and fix the problem on your own. Good luck


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