P0BE7Drive Motor A Phase U 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
- P0BE7 means the output of the phase U current sensor in the motor A inverter has fallen below its valid range. GM converts the sensor voltage into amps and compares it with a limit: below -700 A for 0.05 of 0.1 s in the 2016 tables and 0.1 of 0.15 s in a 2019 table, both Type A; below -700 A, Type B, on the 2012 two-mode trucks; below -440 A, Type B, two trips, in the BAS Plus (eAssist) table; the 2011 Volt uses 800 A limits for these sensors. Such values are far beyond real phase currents, so the cause is electrical, typically a sensor signal pulled toward ground. GM's eAssist controller then runs current control without the sensors, which costs motor A performance.
- What you may notice
- Malfunction indicator lamp and hybrid warning
- Reduced power or no assist from drive motor A
- Possible shutdown of electric drive
- Likely causes
- LikelyFailed phase U 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.