P0BEBDrive Motor A Phase V Current Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0BEB reports that the phase V current sensor in the motor A inverter outputs a signal below its valid range. GM compares the converted current with a lower limit: below -700 A for 0.05 of 0.1 s (2016 tables) or 0.1 of 0.15 s (2019 table), Type A, one trip; below -800 A, Type A, on the 2011 Volt; below -700 A, Type B, two trips, on the 2012 two-mode trucks. Real phase currents never reach these values, so the code points to an electrical fault such as a sensor output pulled toward ground or a dead sensor. Unlike P0BEA, the sensor is not just shifted but out of its measuring range. Motor A is then run in a restricted mode.
- What you may notice
- Malfunction indicator lamp and hybrid warning
- Reduced power from drive motor A
- Possible shutdown of electric drive
- Likely causes
- LikelyFailed phase V current sensor inside the inverter
- PossibleSensor signal or supply pulled to ground on the sensor board
- RarePoor contact at an internal or external inverter connector
- 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.