Powertrain, generic (extended)

P2E38 Battery Charger B Enable Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E38 flags an enable circuit of charger B that is electrically sound, while the charger or its partner modules do not react to it as expected. No manufacturer documents P2E38 publicly. Ford shows the A-side logic for P0E64 in its 2019 plug-in hybrid OBD summary: once the charger is ready and the wake-up line Chrg_Wkup is high, the battery energy control module must report ready; if it still says not ready after 30 s, the test fails. Slow start-up, a module that does not wake or mismatched software can therefore trigger the code without any wiring fault. GM's 2019 hybrid tables check the hardware side of the line separately (P0E61). CARB asks for rationality checks where feasible. Circuit faults are P2E35 to P2E37, output power deviations P2E3A. Charging may start late or not at all.

Likely causes

Software mismatch between charger B and battery control module
Battery control module not waking or starting too slowly
Enable level marginal due to contact resistance

Symptoms

  • Charging begins only after a long delay or not at all
  • Fault appears only on some charging sessions

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–2,500
Time0.5–4 h

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

Parts involved

on board chargerbattery energy control modulewiring harness

Related codes

P2E35P2E36P2E37P0E64P2E3A

References: law.cornell.edu, fordservicecontent.com, gsi.ext.gm.com.