P0BEB code meaning
Drive Motor A Phase V Current Sensor Circuit Low
Powertrain system Generic code P0Bxx codes Check engine light
What P0BEB means
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.
P0BEB 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 P0BEB
- Malfunction indicator lamp and hybrid warning
- Reduced power from drive motor A
- Possible shutdown of electric drive
Common causes of P0BEB
- Most likelyFailed phase V 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 v current sensorWiring harnessHybrid control module
What each part of P0BEB 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. |
| EB | The exact fault in that area. |
What to do next
- Note P0BEB 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 P0BEB
What does P0BEB mean?
P0BEB means "Drive Motor A Phase V Current Sensor Circuit Low". P0BEB reports that the phase V current sensor in the motor A inverter outputs a signal below its valid range. It is a generic code, so it means the same on every make.
Is it safe to drive with P0BEB?
Drive gently and only to a workshop. With P0BEB the car can go into limp mode (reduced power) to protect itself.
Will P0BEB fail an emissions test?
Yes, it can. P0BEB 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 P0BEB to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0BEB clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.