Sometimes these inconveniences can be fixed easily by doing some routine maintenance tasks on your dishwasher. Follow these troubleshooting tips if you're having common dishwasher problems: Cleaning and descaling your dishwasher a few times a year will help remove greasy residues and hard water buildup and help improve cleaning efficiency. At this stage of the work, the Bosch dishwasher is connected to the sewerage, water supply and electricity, therefore, first of all, disconnect the device from the indicated units. Next, remove the plastic clips located on the edges of the body and unscrew the front part of the machine. After that, unscrew the thin narrow metal panel.
Bosch dishwashers have a built-in diagnostic system which lets you know if there are any issues with the dishwasher, the errors it gives, can indicate if you need a replacement or a check-up, but not many of us know what they mean, so here is what you need to know.
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Service Code E0
It is displayed when you entered diagnostics test mode and retrieved fault codes from memory.
Error Code E1 or E2
it is displayed when there was an issue with the temperature sensor or thermistor, in order to access the sensor you need to remove the dishwasher front cover and locate thermistor under the tub.
Error Code E3
it is displayed when the dishwasher cant
If the dishwasher’s water supply is fully open but the dishwasher cannot fill with water then turn off the water supply and unplug the dishwasher.
Remove the water fill line and verify that the water inlet valve is connected. If so, replace the water valve.
Don’t try to clean the screen as it can make the problem worse because it can get stuck open from gunk and either flood or overfill.
Error Code E4
This error related to water flow sensor, most likely caused by calcium builds-up on the sensor wheel.
it’s just can’t spin and unable to measure how much water entering the dishwasher. In this case you just need to replace the sensor. There is no way to clean it.
Error Code E5
it is displayed when the dishwasher is overfilled with water, in order to check you must unplug and re-plug the dishwasher if the problem continues, check the float switch.
Error Code E6
it is displayed when there was a fault in the Aqua Sensor, the aqua sensor is responsible for detecting whenever the water is clean or dirty and controls the water turbidity.
Error Code E9
It is displayed when an issue with the heating element occurred. In some cases, it may be caused by solder joint on the heater relay on the control board.
Just follow this video to see how to fix it.
Error Code E15
This error code means, that your dishwasher leaking and triggered a flood sensor. It can be caused by one of the water hoses been slipped off or one of the clamps that holds these hoses got weak.
You need to pull the dishwasher out from its place and remove side panels to see where its leaking from. This video can help to identify your cause of leakage.
Error Code E22
This error caused when there is residual water left in the sump due to blockage of the fine filter.
Error Code E24 or E25
It is displayed when there was a drain error. Usually due to cloggage in drain pump.
If you can hear pump running but not draining, check back valve or check valve to make sure nothing got stuck in there.
if you hear pump humming and not spinning, then drain pump impeller jammed by broken glass or bones, or something else.
Service Code H24
Bosch Dishwasher Troubleshooting:
Your Bosch dishwasher can run a test cycle that will quickly go through each stage of a wash program in order to find out at what point a fault is occurring.
It will only give you a general idea of where the problem is, but its a useful first step in diagnosing the issue.
The steps to start the test cycle vary depending on what model you have but the basic method is similar across the range.
It might be that your dishwasher doesn’t have the same button labeling as described in the steps below.
In that case, try holding down the buttons
- Make sure the dishwasher is switched off.
- Press and hold the Power Scrub Plus and Regular Wash buttons
- Turn on the dishwasher, then release the two buttons.
- The light above each of these buttons should flash
- Start the test cycle by pressing the Power Scrub Plus and Regular Wash buttons again
- The test program will begin and an error code will be displayed at the end of the cycle if a fault has been detected
Fault Codes E01, E02, E03, E04, E05
Cause: The E01, E02, E03, E04, E05 faults codes mean that the dishwasher has suffered a power module failure.
The programming of replacement power modules has been locked down by Bosch, so in the event of an error code of this type, it’s recommended that you contact a Bosch approved dishwasher engineer.
Entering service test program
Controls contain codes for factory tests, customer service test programs, dishwasher configuration and error codes.
Consult test programs and error codes for your dishwasher before using the codes from this manual.
While pushing (and holding) any two wash cycle buttons, turn the dishwasher on with the on/off switch.
After releasing the buttons, LED “B” will be lit and LED “C” will flash, confirming you’re in the special programs menu.
To enter the test program, push button “B” repeatedly until the digital display shows “P1” or until LED “C” is lit. Push button “C” to start the program — LED “C” will blink.
The steps will show on the digital display (e.g.”S:01″) – push button “B” to skip a step.
Stored error codes will show on the digital display and LED’s (see Error code displays). The test program can only be stopped / reset by pushing the on/off button – it can’t be done by turning off the power.
Error codes can be found using the customer service test program. Most dishwashers will show the following error codes.
For dishwashers without digital displays, the “LED’s” column will show the light displays for each error code.
If there is more than one error code, the display shows the one with the higher priority.
Dishwasher controls store error codes from the last wash cycle (units w/o digital displays) or from the last eight wash cycles (units w/ digital displays).
Error code E5 depends on the model, either safety float water level reached or motor speed error. Check the test program for the particular model.
- If error code E5 is safety float water level reached, check the float and float switch, check if the water is in the base and check if the water inlet valve has re-seated after closing.
To clear error codes, run the customer service test program.
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Since the heater is the part of the circulation pump (or motor), you cannot buy it separately in order to replace it. It is important to take into account the exact model of your Bosch washing machine when buying parts, since error E09 is specific for third generation appliances.
If the machine displays error E9, in 90% of cases it is the failure of the heating element. But the remaining 10% are:
- issues with wiring;
- temperature sensor failure;
- Incorrect work of the main module.
What causes the malfunction of the heater
If you do not want to face such a problem in the future, you need to remember its main causes:
- Water leakage. The gaskets and seals in the appliance wear out over time and the leakage may occur. As a result, water gets into the sump, where the heater and motor are located. Quite often, the cover at the junction with the body loses its tightness. However, it is worth checking not only this, but all other elements as well: nozzles, hoses e t c.
- Clogged filter. The drain filter requires regular cleaning. This prevents many problems and other error codes. Because of the clogging, the water circulates slowly, which leads to overheating of the heater. Therefore, the system can display error code E09. How to fix the problem? Open the door and find the mesh filter at the bottom, remove it and rinse it under the tap water. No matter how you try to clean the dishes from the food, small particles still get into the Bosch dishwasher which causes clogs.
- Poor-quality hard water affects the operation of the dishwasher. Lime scale settles on the heater, forming a thick layer. It takes more time end power for the heater to do its job and eventually it overheats and burns. Use salt to soften water and prevent the appearance of scale.
Issues with wiring or thermal sensor occur due to instability in the power grid. If you have not installed a voltage regulator when connecting the dishwasher, we recommend you to do this. Otherwise, the control module may burn.
In addition, the shortage may occur during the contact of water with contacts.
How to fix the malfunction
First, you need to exclude the crash in the system. If the error code is displayed for the first time, you should know how to reset the program:
- remove the plug from the socket;
- wait 10-15 minutes;
- connect the dishwasher to the power supply.
Is the error no longer displayed on the screen? In this case, the problem is solved. If it shows up again, then you have to change the heater – you will need to disassemble the dishwasher. Here’s what you should do:
Bosch Dishwasher Quick Cycle
- Disconnect the dishwasher from the power grid, water supply, sewage.
- Remove the plastic clips located at the edges of dishwasher’s body.
- Unscrew and remove the front part of the equipment.
- You will see a metal bar under the door. Unscrew it.
- Remove the thermal insulation.
- Unscrew the screws around the perimeter of the sump.
- Open the tub door, pull out the racks.
- Remove the spray arm
- Remove the filter and the mesh below it.
- Remove the four screws that hold the circulation pump.
- Now put a cloth under the appliance and turn it over.
- Unscrew the screws around the perimeter and remove the sump.
- Disconnect the wires from the drain pump, unscrew the screws.
- Turn the pump clockwise and remove it.
- Remove everything that holds the circulation unit in place: wires, hoses, nozzles.
- Remove the clamp that holds the heater on the pump. Remove the heater.
- Install the new part in the reverse order.
Cycle Status 2 09 Bosch Dishwasher Manual
If you are not sure that the heating element is broken, check the resistance of its contacts using a multimeter.