Powertrain, generic · Hybrid propulsion

P0C19 Drive Motor A Torque Delivered Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0C19 is a plausibility check: the torque that motor A actually delivers, calculated by the motor control processor, does not follow the slewed torque command. GM sets it when the difference exceeds 123 Nm for 0.1875 s within 0.2 s on the 2016 and 2018 tables, Type A, one trip; eAssist uses 36 Nm as Type B, two trips. The 2012 two-mode trucks check whether the sum of the three phase currents exceeds 110 A for 200 ms. Stellantis lists P0C19 on the Jeep Wrangler 4xe and the Wagoneer PHEV with P1B03, a resolver rationality fault, and cures it by reflashing the power inverter module. The electric drive shuts down and the engine takes over.

Likely causes

Outdated power inverter module software (Stellantis 08-059-25, 08-231-24)
Implausible rotor position signal from the motor A resolver or its wiring
Faulty phase current sensing distorting the calculated torque
Internal fault of the inverter power stage or motor winding

Symptoms

  • Malfunction indicator lamp
  • Electric drive shuts off and the engine takes over
  • Engine stop-start no longer works or a service hybrid system warning appears

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–5,000
Time0.5–8 h

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

Parts involved

drive motor ahybrid control module

Related codes

P0C1AP0A1BP0A78P0A3FP0BE6

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