P0BE7 code meaning
Drive Motor A Phase U Current Sensor Circuit Low
Powertrain system Generic code P0Bxx codes Check engine light
What P0BE7 means
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.
P0BE7 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0BE7
- Malfunction indicator lamp and hybrid warning
- Reduced power or no assist from drive motor A
- Possible shutdown of electric drive
Common causes of P0BE7
- Most likelyFailed phase U current sensor inside the inverter
- PossibleSensor signal or supply pulled to ground on the sensor board
- Less likelyPoor contact at an internal or external inverter connector
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 sensorWiring harnessHybrid control module
What each part of P0BE7 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. |
| E7 | The exact fault in that area. |
What to do next
- Note P0BE7 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 P0BE7
What does P0BE7 mean?
P0BE7 means "Drive Motor A Phase U Current Sensor Circuit Low". P0BE7 means the output of the phase U current sensor in the motor A inverter has fallen below its valid range. It is a generic code, so it means the same on every make.
Is it safe to drive with P0BE7?
Drive gently and only to a workshop. With P0BE7 the car can go into limp mode (reduced power) to protect itself.
Will P0BE7 fail an emissions test?
Yes, it can. P0BE7 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 P0BE7 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0BE7 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.