Powertrain, generic (extended)

P2E3F Battery Charger B Module Forced Shutdown Voltage Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E3F reports a forced shutdown signal at charger B that stays below its permitted voltage. No manufacturer documents P2E3F or the shutdown logic behind it publicly. If the line is fail-safe, as at the EVCC controller from Watt & Well, where zero loop current or an unconnected input triggers the stop, then a ground short or a break looks like a standing shutdown command and charger B stays switched off for good. The code lets the system tell that wiring fault from a deliberate request. Likely findings are a damaged wire near the charger mount, a corroded or loose pin in the signal plug, or a commanding output stage stuck low. A charger that cannot run is exactly what CARB wants a plug-in hybrid to report. High is P2E40, implausible P2E3E, charger A low P2E33.

Likely causes

Shutdown line of charger B shorted to ground
Broken wire or loose pin in the signal plug
Output stage of the commanding module stuck low

Symptoms

  • Charger B never takes part in charging
  • Reduced charging power or no charging

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–2,000
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

on board chargerwiring harness

Related codes

P2E3EP2E40P2E33P2E30

References: law.cornell.edu, wattandwell.com.