The Bosch Dishwasher code E22 means: Sensor error — turbidity or flow sensor fault.
Difficulty: Moderate — DIY-able with basic tools
What to do, step by step
- Clean the sensor at the pump housing.
- If persistent, replace the sensor.
Video walkthrough
Is the repair worth it?
Before spending money, run the numbers: if the repair quote is more than about 30% of what a new dishwasher costs — especially on an older unit — replacement is usually the smarter call.
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Safety first: unplug the appliance (and shut off gas where applicable) before any inspection. If you smell gas, leave the area and call your gas provider.