P2D92Starter/Generator Phase X Current Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2D92 is set when the signal from the phase X current sensor of a belt or crankshaft starter/generator rises above the range the control electronics treat as valid. Such sensors, commonly Hall devices placed around the phase conductor, put out a voltage that tracks the current, so a value stuck near the top of the scale points to the circuit rather than to real current: a signal lead touching a supply voltage, a damaged connector or a sensor whose output has failed high. No manufacturer documents P2D92 publicly. The closest published logic is GM's eAssist belt machine, coded as drive motor A: a reading above 440 A within about 42 ms, Type B over two trips, after which current control carries on without the sensors. Low side: P2D95; Y and Z: P2D93, P2D94.
- What you may notice
- Warning lamp or MIL, often only after the fault has been seen on two trips
- Reduced electric assist and weaker restarts after automatic engine stop
- Automatic stop-start no longer active
- Likely causes
- LikelyPhase X sensor signal wire shorted to a supply or reference voltage
- PossibleCurrent sensor output failed at the upper end of its range
- PossibleDamaged, corroded or water-contaminated connector at the starter/generator
- RareFault in the evaluation circuit of the starter/generator control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.