P0C51Drive Motor A Position Sensor Circuit A Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0C51 means the first resolver winding of motor A (Circuit A) delivers a signal that is electrically present but not believable, for example unsteady or out of step with the second winding. Bentley uses it on 2025 Continental GT, GTC and Flying Spur hybrids, logged by the e-drive control unit at address 0051 next to P0A4000 and later P0C5B00, with a drive system message in the cluster. Bulletin 2080242 asks for logged measured values, a check of the sensor and power electronics plugs for bent pins, weak terminal grip, moisture or corrosion, then basic settings; revision 3 adds a new 90-degree connector. No set threshold is published. P0C52 to P0C54 cover low, high and sporadic faults of the same line.
- What you may notice
- Drive system fault message in the instrument cluster
- No electric or hybrid driving mode available
- Fault may come and go with temperature or vibration
- Likely causes
- LikelyWeak terminal grip or bent pins at the sensor or power electronics connector
- PossibleMoisture, oil or corrosion in the resolver connectors
- PossibleFaulty 90-degree connector on the affected Bentley models (TPI 2080242/3)
- RareResolver winding with degraded output
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.