P2D97
Starter/Generator Phase Z Current Sensor Circuit Low
The current sensor for starter/generator phase Z reports voltage below the expected window. Indicates short to ground or sensor offset drifted low.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- Sensor offset drifted lowPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Starter Generator Phase Z Current Sensor
- Wiring Harness
- Hybrid Control Module
P2D97 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.