P0C5BDrive Motor A Position Sensor Circuit B 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
- P0C5B is set when the second resolver winding of motor A (Circuit B) stays within its electrical limits yet carries a signal that does not make sense next to the first winding. Bentley added it in revision 3 of bulletin 2080242 for the Continental GT, GTC and Flying Spur hybrids: P0C5B00 now appears alongside P0C5100 and P0A4000, which shows that both windings lose plausibility at once when the shared connection is poor. The repair path is the same, measured value logs, inspection of the 8-pin and 32-pin plugs for pin drag and corrosion, replacement of a 90-degree connector after approval, then basic settings. No threshold is published. P0C5C to P0C5E are the low, high and sporadic Circuit B faults.
- What you may notice
- Drive system fault shown in the cluster
- Electric drive mode not available
- Usually stored together with P0C51 and P0A40
- Likely causes
- LikelyInsufficient terminal grip at the sensor or power electronics connector
- PossibleFaulty 90-degree connector on affected Bentley hybrids (TPI 2080242/3)
- PossibleCorrosion, oil or moisture in the resolver plugs
- 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.