P0BE9Drive Motor A Phase V Current Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0BE9 covers a general circuit fault of the phase V current sensor in the motor A inverter, meaning an electrical problem the controller does not narrow down to an offset, low or high condition. No manufacturer documents this exact code publicly. GM's hybrid tables for the 2011 Volt, the 2012 two-mode trucks and the 2016 to 2019 models list only the specific siblings P0BEA, P0BEB and P0BEC; GM's BAS Plus (eAssist) table lists phase current codes only for U and W. CARB requires hybrid sensor circuits to be monitored. Because the three phase currents are used together for torque control and their sum is cross-checked (P0BFD), a lost V signal normally forces reduced motor A operation.
- What you may notice
- Hybrid system warning and malfunction indicator lamp
- Reduced power from drive motor A
- Likely causes
- LikelyFailed phase V current sensor inside the inverter
- PossibleSupply or signal fault on the inverter's sensor board
- RareSoftware fault in the motor control processor
- 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: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.