Powertrain, generic · Hybrid propulsion

P0C62 Drive Motor B Position Sensor Circuit B High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Faulty motor B position sensor on 2011-13 Volt and 2014-16 ELR (GM PIC5856)
Open S2 or S4 wire or terminal backed out of the connector
Drive motor generator control module without the latest calibration

Symptoms

  • Service engine soon lamp, often with P0C58
  • Reduced propulsion power
  • Code may return after clearing until the sensor is replaced

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

drive motor b position sensor bwiring harnesshybrid control module

Related codes

P0C61P0C58P0C57P0C5FP0A48

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov.