P0BFADrive Motor B Phase W Current Sensor Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0BFA checks the phase W current sensor of the motor B inverter for a plausible zero point. GM learns the offset at each start while no current flows and sets the code above 30 A on the 2011 Volt (Type A, power stage open), above 30 A on the 2012 and 2013 two-mode trucks (Type B, two trips, only with P0BFB/P0BFC inactive), above 30 A after 0.1 s in the 2016 tables and above 35 A after 0.4 s in a 2019 table (both Type A). Jeep's EMEA bulletins for the 2020 Renegade and Compass 1.3 PHEV put P0BFA first among the motor B codes, with MIL, turtle and Service 4WD lights, and cure it with new software for the hybrid control processor and auxiliary processor (power inverter module).
- What you may notice
- Malfunction indicator lamp
- Turtle (limp home) light and Service 4WD light (Jeep)
- Reduced electric drive power
- Likely causes
- LikelyHybrid control processor software (Jeep bulletin 08-056-21/08-057-21)
- PossibleZero point of the motor B phase W current sensor drifted past the limit
- PossibleFaulty current sensing electronics in the power inverter module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.