OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P0B22?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCurrent sensor failed
Repair at a glance
- Difficulty
- Shop_only
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Generator, Phase Current Sensor, Inverter
Related codes
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Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.