P2E3BBattery Charger B Output Voltage Too Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E3B is set when the high-voltage output of charger B stays below what the control unit expects while charging. No manufacturer documents P2E3B publicly. For the A-side code P0D21, GM's 2016 tables for the Cadillac ELR use a fixed floor: in constant-current as well as constant-voltage mode the charger bus must not drop under 150 V, and 8 failures in 10 samples set the code as Type B. Stellantis stores P0D21-00 in the integrated dual charging module (IDCM) with the MIL on and the car refusing to charge, on the 2021 Wrangler 4xe (TSB 08-260-26, some cars also tripping the house circuit breaker) and the 2022 Pacifica plug-in hybrid (TSB 08-334-26); the fix in both is IDCM software. CARB requires such charger faults to be caught. Imprecise output is P2E3A, a short P2E3D.
- What you may notice
- MIL on and vehicle will not charge
- Level 2 charging fails, wall box breaker may trip
- Likely causes
- LikelyCharger module software fault fixed by reprogramming
- PossibleFailed power stage inside charger B
- RareHigh resistance in the HV output connection
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €0 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.