P0C58Drive Motor B Position Sensor Circuit A 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
- P0C58 sets when the S1/S3 winding circuit of the motor B resolver shows a reference level above its window, as from an open lead drifting up or a short to voltage. GM limits are 4.5 V on the 2011 and 2016 Volt, 4.9 V on the 2019 Volt and 3.0 V on the 2012 two-mode trucks, with the fast high-side timing of 20 out of 30 samples on early cars. This is one of the most frequent resolver codes on the first-generation Volt. GM's first note PIC5856 from 2013 already paired P0C58 with P0C62, the S2/S4 high code, on 2011-13 Volts: if wiring is fine, a new motor B position sensor goes in, a part ordered through GM's technical assistance center, and update the module calibration.
- What you may notice
- Check engine lamp, frequently together with P0C62
- Reduced propulsion power
- Fault may only be in history memory
- Likely causes
- LikelyFaulty motor B position sensor on 2011-13 Volt and 2014-16 ELR (GM PIC5856)
- PossibleOpen S1 or S3 line or spread terminal at the resolver connector
- RareMotor control module running an older calibration
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.