Powertrain, generic · Hybrid propulsion

P0C01 Drive Motor A Current High

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P0C01 is the overcurrent check of drive motor A, meant to protect the inverter's IGBTs. GM sets it when any phase current exceeds 725 A on the 2011 Volt, 600 A on the 2012 two-mode trucks and in the 2016 to 2019 tables, or 396 A on eAssist; since 2016 a too negative d-axis current (about -540 to -310 A, depending on stator temperature) also counts. A fast and a slow counter catch sudden and intermittent faults; Type A, one trip. GM PIP5246 links it on Volt and ELR to a damaged motor 1 stator. Stellantis lists it on the 2018/19 Wrangler eTorque (motor generator unit) and on the 2026 Wagoneer S and Cherokee, there caused by cross-threaded three-phase cable bolts. Expect limp mode.

Likely causes

Damaged or improperly torqued three-phase cable joints (Stellantis S2608000006)

Damaged stator winding of motor A (GM PIP5246)

Outdated hybrid control software (Jeep TSB 08-144-23)

Failing power switch or current measurement in the inverter

Symptoms

Limp mode with warning lamp
Reduced propulsion or engine unavailable message
Rough running or loud noise from the motor generator

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€100–6,000

Time1–10 h

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

Parts involved

drive motor adrive motor a inverter

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com.