P0C5DDrive Motor A Position Sensor Circuit B 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
- P0C5D means the S2/S4 winding circuit of the motor A resolver, Circuit B, reads a reference level above its ceiling. This hints at an open wire whose input floats toward the supply, or contact with a voltage-carrying conductor. GM applies 4.5 V on most of its hybrids, 4.9 V on the 2019 Volt and a much lower 3.0 V on the 2012 two-mode Tahoe, Yukon, Escalade, Sierra and Silverado. On the 2013 eAssist cars, 20 failed samples out of 30 at 10.4 ms set a two-trip Type B fault; the 2011 Volt uses the same count as a one-trip Type A. When P0C5D appears with P0C53, the shared plug or the resolver itself is more likely than a single wire. No bulletin names this code.
- What you may notice
- Check engine lamp after one or two trips depending on the vehicle
- Electric assist or drive unavailable
- Auto stop disabled on mild hybrids
- Likely causes
- LikelyOpen S2 or S4 wire or backed-out terminal
- PossibleS2/S4 line touching a voltage-carrying conductor
- PossibleBroken S2/S4 winding in the resolver stator
- RareFaulty resolver input stage in the motor 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.