Powertrain, generic · Hybrid propulsion

P0BF6 Drive Motor B Phase V Current Sensor Circuit Range/Performance

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P0BF6 is the performance check of the phase V current sensor in the motor B inverter, implemented by GM as a zero offset test. The offset is learned at every start with no current through the motor and must stay within 30 A on the 2011 Volt (Type A, P0BEB/P0BEC not active, as printed in the table) and in the 2016 tables (Type A, 0.1 s), within 30 A on the 2012 and 2013 two-mode trucks (Type B, two trips) and within 35 A in a 2019 table (Type A, 0.4 s). A shifted zero would skew torque control and the phase current balance. Jeep names P0BF6 as Drive Motor B Inverter Phase V Current Sensor Circuit Range/Performance on the 2020 Renegade and Compass 1.3 PHEV (EMEA), fixed by reflashing the hybrid control processors.

Likely causes

Hybrid control processor software (Jeep bulletin 08-056-21/08-057-21)

Zero point of the motor B phase V current sensor drifted past the limit

Faulty current sensing electronics in the power inverter module

Symptoms

Malfunction indicator lamp
Turtle (limp home) light and Service 4WD light (Jeep)
Reduced electric drive power

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€100–4,000

Time0.5–6 h

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

Parts involved

drive motor b phase v current sensorwiring harnesshybrid control module

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