P0BFDDrive Motor A Phase U-V-W Current Sensor Correlation
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Malfunction indicator lamp and hybrid warning
- Turtle (limp home) light and Service 4WD light (Jeep)
- Reduced power from drive motor A
- Likely causes
- 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
- 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.