P2E40Battery Charger B Module Forced Shutdown Voltage High
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E40 means the forced shutdown signal of charger B reads above its valid band, typically from a short to a 12 V wire or a leak inside the charger or the module that drives it. No manufacturer documents P2E40 publicly. With fail-safe logic, as Watt & Well specifies for the EVCC, where flowing current stands for normal operation, a line held high can no longer pass on a stop order, so the hardware path that should end charging in an emergency is lost. For that reason a control unit would rather keep charger B disabled than run it without a working off-switch. CARB's onboard charger requirement covers this too. Low is P2E3F, implausible P2E3E, charger A high P2E34. The driver mainly notices slower or no charging.
- What you may notice
- Charging slower or impossible with charger B locked out
- Charging system warning message
- Likely causes
- LikelyShutdown line of charger B shorted to a 12 V wire
- PossibleInternal leakage in charger B or the commanding module
- RareMiswiring after a harness or charger repair
- Repair
- Hard · Usually a job for a workshop.Typical cost: €60 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.