Bosch modern dishwashers have a complete, intelligent self-diagnosis system. It is triggered when a malfunction occurs, which the user will know about using the error code that appears on the display.
To figure out why the dishwasher broke down, you need to know what the codes mean. Next, you will find the decoding of the combinations and get a quick guide to action.
How Bosch Trouble Codes Decrypt
The mistakes of Bosch dishwashers will be clearer if they are classified by type of fault. For your convenience, we have combined them into tables.
Heating problems
Code | Decryption |
E01 (or F01) | Heater contacts failed, or the heater burned out. If this is confirmed by verification, the heater must be changed. Check the temperature sensor together with the heater. |
E2 (or F2) | The error may alternate with the previous one. E2 means breakdown of the temperature sensor. A malfunction causes the heater to malfunction because the thermistor does not report water temperature information. To confirm the failure, check the contacts of the temperature sensor with a tester. If the resistance is about 50 kOhm - the element is serviceable, and if it deviates - it needs to be replaced. |
E09 (or F09) | Error codes E09 or F09 report problems with the flow heater. Code E09 appears in those PMMs in which the heater is located in the circulation pump. To eliminate breakage, replace TEN. Before making repairs, check the part with a tester. |
E11 (or F11) | What does the code E11 mean? He reports that the temperature sensor of the dishwasher is powerless. Second value: the circuit between the electronic board and the temperature sensor is broken. The error can be caused by the “carriage” of factors, therefore, the following needs to be checked: contacts of the temperature sensor, wiring between the sensor and the board. |
E12 (or F12) | The code is typical for Bosch dishwashers, in which plaque from hard water adhered to the heater. If you rebooted the machine, and after the E12 code E09 is displayed - the thing is scale. Sometimes you can do without replacing parts - you need to remove and clean the heater. |
Problems with draining and filling the water in the Bosch dishwasher
There are few breakdowns in this group, much more codes themselves. Let's consider them in the table.
Mistake | Decryption |
E3, F3 | With the E3 code, the dishwasher stops working, because the selected program in the allotted time did not get enough water. With F3, water is automatically drained from the system. If your dishwasher is more than 7-10 years old, its behavior may differ: the machine will give an error and wait until the water reaches the required volume. Need to check: · Is there water in the tap? · Whether there is a blockage in the filter on the intake hose and at its inlet to the machine; · Does the water inlet valve work? · In what condition is the level sensor; · Whether the drain pump is working. |
E5, F5 | Breakdown codes indicate that the PMM Bosch tank is completely full. This happens if the machine draws excess water, and the level sensor fails to monitor and stop the process. The reason is in the sensor. Need a check: · Its tubes are clogged; · Contacts and wiring of the element; · Filling valve (maybe it does not close completely, because of which water goes into the system without stopping); · Management system (a rare case, the verification of which is best entrusted to the master). |
E8, F8 | By the nature of the breakdown, the error is similar to E3 or F3, because the dishwasher is not gaining the right amount of water. The steps for troubleshooting are the same as for E3. |
E16, F16 | These codes are displayed when the dishwasher does not block the access of water to the tank - it begins to flow in an uncontrolled amount. Failure is caused by blockage of the intake valve. Are needed: · Check and cleaning of the valve; · Checking the level sensor; · Check whether there is excessive foam from the detergent (in the event that an error occurs during operation of the machine). |
E17, F17 | E17 or F17 combinations are displayed on the dishwasher's display when there is a problem with water filling. A very "narrow" error - means that the valve closes with difficulty or its closure is completely blocked. If the shock is to blame for the failure, then a reboot will help. And if the water supply is constantly increased pressure, partial overlap of water in the riser is required. At the same time, check the level sensor. |
E21, F21 | These codes indicate problems with the drainage pump when it does not pump water. Actually, if there is no open circuit in the power circuit, and the pump interacts with all sensors and the board, but does not work. The causes of the problem: · The impeller of the pump is jammed due to a blockage or debris wrapped around it; · The rotor stuck to the wall of the sleeve - in this case, except for E21, code E22 is likely; · The pump is broken due to wear and tear, requires replacement. |
Clogging problems
Such errors are the most frequent “guests” in Bosch brand dishwashers. Systems become clogged because users forget to clean the dishes before loading them into the PMM. Typical errors confirming the presence of blockages are shown in the table.
Code | Value |
E07 or F07 | The cause of the failure may be a mechanical restriction of access to the hole when the dishes are not properly placed in the machine. Also, the hole may be clogged with garbage. |
E22 or F22 | The code indicates that one of the filters is dirty or indicates a malfunction of the drain pump (the impeller blades rotate with difficulty). |
E24 or F24 | It occurs when the drainage hose is bent or clogged, when the sewage is clogged and the drain outlet of the siphon is blocked. |
E25 or F25 | In most cases, the cause of the error is a blockage in the drainage pump nozzle (in the base area). The pump cannot push water into the drain, the sensors report this to the board, and it blocks the operation of the machine and issues an E25 code. Cleaning the nozzle and the water drain hose will help, checking the impeller. |
Bosch sensor malfunctions
In a modern dishwasher, there are tons of sensors that control dozens of processes and programs. If the sensors fail, the diagnostic system immediately responds to this with the appropriate code.
Code | Designation |
E4, F4 | Occurs when the flow sensor is broken or clogged. It is possible that hard water has created a blockage in the nozzles of the sprayer, which is why water is poorly supplied and code E04 appears. |
E6, F6 | Faulty water purity (turbidity) sensor. It is located next to the heater. If the sensor itself is working, check the electrician, but usually you have to change the element. |
E14, F14 | Code E14 confirms the malfunction of the sensor, which is responsible for the volume of water supplied to the dishwasher. |
E15, F15 | The error is typical for modern models with the AquaStop system; it appears when a leak occurs. To eliminate the code, inspect the pan and hoses, make sure that there is a leak. If you do not find traces, inspect other elements of the system. |
Electrician
All parts and sensors are wired to the control unit. If one wire out of all this mass burns out or fades, one of the codes may appear.
Code | Value |
E01, F01 | Code E01 indicates problems with the electrical or electronic component of the device. Before rebooting the machine, make sure that E01 is lit on the display, and not another code. Repeated reboot did not help? Turn off the machine and contact service. |
E27, F27 | When connecting the equipment to the mains directly, you can soon get the E27 code on the board. It occurs with voltage drops. To protect the machine from complete breakdown, connect it using a stabilizer. |
Now you know how to fix some mistakes of Bosch dishwashers with your own hands. Remember that codes help you find a failure in a timely manner and prevent a total breakdown.