What should I do if error E04 is displayed in the Bosch dishwasher? It is necessary to determine the meaning of the code – it indicates a breakdown of the flow sensor, because, for example, a blockage has occurred. Our article will help you make a detailed decryption, and also tell you how to fix the problem.
If the dishwasher has stopped working and produces strange characters on the display, the system informs the user about the problem thanks to the self-diagnosis function.
What does the fault code mean
The dishwasher may show an error E 04 if the flow sensor breaks, as well as if the nozzles work poorly. Due to clogging or due to high water hardness, the jets do not pass well through the holes in the sprinkler, which leads to inhibition of the PMM.
Water does not enter well inside, but this situation is not critical, so you can try to fix the breakdown with your own hands.
How to fix the situation
First you must check if the fault is really there, or if it is a failure in the system. Try to reset code E04:
- unplug the Bosch dishwasher;
- wait 10-15 minutes;
- restart.
If the icons have disappeared and no longer appear, then everything is in order. But if the machine again gives an error on the screen, then you need to take action.
What to do? To clean the sprinkler:
- Remove the rocker from the seat.
- Rinse under water pressure.
- Clean the nozzles (holes) with a toothpick.
Use special dishwasher salt. It allows you to reduce the hardness of the water and prevents the formation of limescale on parts. How to choose a remedy, read in a separate article.
Parts cleaned, but the fault code reappeared? Then the flow sensor should be replaced. It is designed to control the amount of water that enters the nozzles. The part is installed in some Bosch models instead of the usual pressure switch. From the sensor, a signal to stop the supply is sent to the control module, which gives the command to stop water intake.
When choosing replacement parts, we recommend that you focus on the make and model of your dishwasher. Since all components are original.
Such breakdowns can be avoided if take care of equipment in a timely manner. Clean the filters and other parts at least once a month. Use products that prevent scale build-up.
Find out how to troubleshoot other Bosch dishwasher errors.