What dr:22 Means
dr:22 on a Bosch Vision front-load washer means the temperature sensor that watches the inverter's power devices has failed. That sensor is what allows the drive to throttle back before it overheats, so without it the inverter has lost its own thermal protection. Bosch's remedy is to change the inverter, because the sensor is part of the module.
Common Causes of dr:22
- Temperature sensor on the inverter power stage failed
- Sensor connection on the module broken
- Inverter module damage affecting the sensing circuit
🔧 One Safe Check You Can Try
There is no home fix and no useful home test. What matters is not treating this as a minor code, because the protection it reports is what keeps the drive from cooking itself on a long spin.
⚠ Why You Shouldn't Go Further Than That
- The sensor is integral to the inverter module, so it is not a part that can be replaced separately.
- An inverter without thermal protection can run itself to destruction during a long spin without warning.
- The module carries high voltage and holds charge after the supply is removed.
- Bosch's remedy is a module change, so exploratory dismantling achieves nothing beyond exposing the electronics.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.