Powertrain, generic (extended)

P2E3E Battery Charger B Module Forced Shutdown Voltage Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E3E is the charger B version of P2E32: the forced shutdown signal of the second charger is electrically in range but its behaviour is implausible. Examples are a shutdown request that the charger ignores, or a level that changes state without a matching command, so the control unit can no longer trust its hardwired off-switch for path B. No manufacturer documents P2E3E or the underlying circuit publicly. What such a line is for can be seen at Watt & Well, whose EVCC controller ends a charging session in hardware as soon as current in its EmShut loop vanishes. CARB demands that plug-in hybrids detect charger faults that prevent or degrade charging. Its low and high faults are P2E3F/P2E40. Expect charger B to be locked out; a first charger may keep charging at reduced power.

Likely causes

Shutdown input stage inside charger B not responding correctly
Intermittent contact in the charger B shutdown line
Software issue in the module issuing the shutdown

Symptoms

  • Charging slower than usual because charger B is locked out
  • Charging system warning message

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

P2E3FP2E40P2E32P2E2F

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