P0B22
Generator Phase U Current Sensor Circuit
Electrical fault on the phase U current sensor of the generator/MG2 used in series-parallel hybrid systems.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: shop_only
Common causes
Ordered by how often each turns out to be the cause.
- Current sensor failedCommon
Parts involved
- Generator
- Phase Current Sensor
- Inverter
P0B22 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.