I have a Bosch SHEM63W55N model and it intermittently ends a cycle with E22 error code. The literal reading of the code is:
An E22 error code indicates that the dishwasher filter is blocked. The filter is the area where food particles get caught and it needs to be cleaned regularly. Remove the filter to make sure it is not clogged.
But the filter is not clogged.
Symptoms and what I've tried:
- The error is always at the end of the cycle
- There is some standing water (about 2-3 inch), but it's in the drain compartment below the filter mesh.
- I removed the pump cover and checked with fingers for debris and possible blockage. I couldn't feel any, and the pump was rotating freely.
- I removed the drain hose from the drainage spigot and the water was draining well into a bucket, so it's probably not a blocked drain hose.
- The dishwasher is 1.5 years old, installed by me, and was working fine until 1 month ago.
What could be the culprit?
Best Answer
Since it thinks the filter is blocked, but you're not finding any blockages, I would think that the sensor that's responsible for telling the computer that nothing is flowing is failing.
A quick DuckDuckGo search for "BOSCH SHEM55W55N parts list" brought me to this site that has a parts diagram for the pump assembly. Scrolling through the parts list for the pump shows a sensor. Since you've been in there, make sure that's the area you're talking about, if that's not it, they have schematics for the whole machine, so you should be able to find the filter you're looking for and an associated sensor, if I've picked the wrong one.
At the current price of $30 USD, it's not the cheapest part to replace on a hunch, but it's certainly not the most expensive part, and definitely cheaper than replacing the whole thing.
No affiliation with or recommendation of the linked site - it was just one of the first options that looked good.