P2DC1Starter/Generator Phase X Current Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2DC1 is the general circuit code for the phase X current sensor of the starter/generator: the controller sees an electrical fault in the sensor path without, or in place of, a separate high or low verdict. CARB's OBD rule normally wants wiring faults and out-of-limit readings stored apart, yet it allows them to share one code when the sensor sits on a circuit board inside the control unit. Starter/generators with inverter and sensors built into the machine can fall under this, so P2DC1 may stand where P2D92 and P2D95 would otherwise appear. Mazda's starter generator, for one, splits its stator drivers into a U-V-W and an X-Y-Z group (bulletin 01-004-25). No manufacturer documents P2DC1 publicly. Range check: P2DC2; intermittent: P2D98.
- What you may notice
- MIL or system warning lamp
- Starter/generator in a reduced mode or switched off
- Stop-start and boost unavailable
- Likely causes
- LikelyPhase X current sensor on the integrated electronics board defective
- PossibleOpen or shorted lead between an external phase X sensor and the controller
- RareUnstable 12 V supply or ground of the starter/generator electronics
- 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.