P0BFA code meaning
Drive Motor B Phase W Current Sensor Circuit Range/Performance
Powertrain system Generic code P0Bxx codes Check engine light
What P0BFA means
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).
P0BFA at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0BFA
- Malfunction indicator lamp
- Turtle (limp home) light and Service 4WD light (Jeep)
- Reduced electric drive power
Common causes of P0BFA
- Most 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
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b phase w current sensorWiring harnessHybrid control module
What each part of P0BFA means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| B | Area: hybrid propulsion. |
| FA | The exact fault in that area. |
What to do next
- Note P0BFA and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0BFA
What does P0BFA mean?
P0BFA means "Drive Motor B Phase W Current Sensor Circuit Range/Performance". P0BFA checks the phase W current sensor of the motor B inverter for a plausible zero point. It is a generic code, so it means the same on every make.
Is it safe to drive with P0BFA?
Drive gently and only to a workshop. With P0BFA the car can go into limp mode (reduced power) to protect itself.
Will P0BFA fail an emissions test?
Yes, it can. P0BFA is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0BFA to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0BFA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.