P0C62Drive Motor B 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
- P0C62 means the reference level on the S2/S4 winding circuit of the motor B resolver climbs above its upper limit. GM triggers it at 4.5 V on the 2011 and 2016 Volt and ELR, 4.9 V on the 2019 Volt and 3.0 V on the 2012 two-mode trucks; on the 2016 Volt the level must stay high for 0.2125 s within 0.3125 s, rated Type B over two trips. P0C62 shows up in every GM note of the PIC5856 series, from the 2013 original to version F of 2019, for 2011-13 Volt and 2014-16 ELR, usually paired with P0C58 and sometimes P0C57. Because both windings of the same resolver report high at once, GM's remedy after clean wiring checks is a new motor B position sensor plus the latest module calibration.
- What you may notice
- Service engine soon lamp, often with P0C58
- Reduced propulsion power
- Code may return after clearing until the sensor is replaced
- Likely causes
- LikelyFaulty motor B position sensor on 2011-13 Volt and 2014-16 ELR (GM PIC5856)
- PossibleOpen S2 or S4 wire or terminal backed out of the connector
- RareDrive motor generator control module without the latest 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.