P0A70
Generator Phase U Current Low
Phase U current of the generator is below the expected window. Indicates open winding or sensor offset.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Phase winding partially openCommon
- Current sensor offset driftedPossible
Parts involved
- Generator Phase U
- Inverter
P0A70 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.