P2BEA code meaning
Hybrid/EV Battery Precharge Contactor Control Circuit B Low
Powertrain system Generic code P2Bxx codes Check engine light
What P2BEA means
P2BEA is stored when control circuit B of the precharge function carries less voltage than its state requires, mostly because the coil feed touches ground or the output is pulled down. With a high-side driver the coil then gets no current and the second precharge path stays open. No manufacturer documents P2BEA publicly. GM's 2016 test of the contactor A equivalent (P0AE6) checks the driver output while it is commanded on and fails below 5.35 V, 13 of 16 samples at 12.5 ms, Type B, two trips, with the 12 V supply above 10.2 V. GM also notes that its open test cannot see a short to ground, which is why this case has its own code. CARB requires circuit checks on hybrid outputs. The high side is P2BEB.
P2BEA at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2BEA
- Vehicle does not become ready to drive
- MIL and hybrid or EV warning on
Common causes of P2BEA
- Most likelyCoil feed chafed and shorted to ground
- PossibleCoil of precharge contactor B shorted internally
- Less likelyDriver stage of the battery controller pulled low
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery precharge contactor bWiring harnessBms
What each part of P2BEA means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| B | Area: hybrid propulsion. |
| EA | The exact fault in that area. |
What to do next
- Note P2BEA 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 P2BEA
What does P2BEA mean?
P2BEA means "Hybrid/EV Battery Precharge Contactor Control Circuit B Low". P2BEA is stored when control circuit B of the precharge function carries less voltage than its state requires, mostly because the coil feed touches ground or the output is pulled down. It is a generic code, so it means the same on every make.
Is it safe to drive with P2BEA?
Drive gently and only to a workshop. With P2BEA the car can go into limp mode (reduced power) to protect itself.
Will P2BEA fail an emissions test?
Yes, it can. P2BEA 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 P2BEA to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P2BEA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.