Powertrain, generic · Hybrid propulsion

P0C02 Drive Motor B Current

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P0C02 is the general current code for drive motor B, the second electric machine, such as the second motor of a two-motor hybrid or the rear motor of an electric all-wheel-drive system. It applies to a current fault that is neither classed as low (P0C03) nor high (P0C04). No manufacturer documents this exact code publicly. CARB requires monitoring of electric motor performance. The documented relative is P0C04: GM checks the phase current of motor B against 600 to 725 A, and Stellantis lists P0C04 on the 2026 Wagoneer S and Cherokee with faulty three-phase cable joints. With P0C02 stored the controller usually cuts or limits the power of motor B. Inspect the phase cabling, the winding resistance and the inverter of motor B.

Likely causes

Loose, corroded or damaged three-phase connection of motor B

Fault in the motor B inverter or its current measurement

Damaged stator winding of drive motor B

Symptoms

Hybrid or electric drive warning lamp
Reduced power or loss of all-wheel drive
Limp mode

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€150–5,000

Time1–8 h

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

Parts involved

drive motor bdrive motor b inverter

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.