P2E31Battery Charger B Module Supply Voltage High
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E31 is the high-side counterpart of P2E30: the low-voltage feed of charger B climbs above what its control electronics accept. On plug-in cars the DC/DC converter holds the 12 V network, so a converter regulating too high is the main suspect; a workshop charger or jump pack set too high, or a faulty measurement inside charger B, can give the same reading. No manufacturer documents P2E31 or a threshold publicly. Mitsubishi's Outlander PHEV pages put the upper edge of the charger test window at 16 V, for P0D67 as well as for the ROM check P0E5E, and Holley's 30-8405 charger unit is rated up to 16 V. Charger faults that get in the way of charging are covered by CARB. System overvoltage is P0563, the A-side twin P2E2E. Charger B likely stops to protect itself.
- What you may notice
- Charging via charger B stops or will not start
- Overvoltage codes stored in several modules
- 12 V battery gassing or lamps unusually bright
- Likely causes
- LikelyDC/DC converter regulating the 12 V network too high
- PossibleWorkshop charger or jump starter with excessive voltage
- RareFaulty supply voltage measurement inside charger B
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.