P0BFD code meaning
Drive Motor A Phase U-V-W Current Sensor Correlation
Powertrain system Generic code P0Bxx codes Check engine light
What P0BFD means
In a three-phase motor without a neutral connection the three phase currents must add up to roughly zero. P0BFD checks this for drive motor A: if the absolute sum of the U, V and W readings exceeds a limit, at least one sensor is wrong. GM's limits: 156 A on the 2011 Volt and 110 A on the 2012 and 2013 two-mode trucks (Type A, one trip), 110 A for 0.0032 of 0.0038 s in the 2016 and 2019 tables (Type A). GM's BAS Plus (eAssist) uses another balance, motor DC current plus accessory module current versus battery current, above 40 A, Type B, blocked while a phase sensor code is active. Jeep lists P0BFD on the 2020 Renegade and Compass 1.3 PHEV (EMEA), fixed by a software update.
P0BFD 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 P0BFD
- Malfunction indicator lamp and hybrid warning
- Turtle (limp home) light and Service 4WD light (Jeep)
- Reduced power from drive motor A
Common causes of P0BFD
- Most likelyHybrid control processor software (Jeep bulletin 08-056-21/08-057-21)
- PossibleOne motor A phase current sensor reading wrong but still within its own limits
- 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 a phase u current sensorDrive motor a phase v current sensorDrive motor a phase w current sensor
What each part of P0BFD 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. |
| FD | The exact fault in that area. |
What to do next
- Note P0BFD 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 P0BFD
What does P0BFD mean?
P0BFD means "Drive Motor A Phase U-V-W Current Sensor Correlation". In a three-phase motor without a neutral connection the three phase currents must add up to roughly zero. It is a generic code, so it means the same on every make.
Is it safe to drive with P0BFD?
Drive gently and only to a workshop. With P0BFD the car can go into limp mode (reduced power) to protect itself.
Will P0BFD fail an emissions test?
Yes, it can. P0BFD 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 P0BFD to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0BFD clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.