Powertrain, generic (extended)

P2E35 Battery Charger B Enable Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E35 covers the enable line of charger B, the hardwired 12 V signal that wakes the charger or allows it to work, and reports a general circuit fault, usually an open. No manufacturer documents P2E35 publicly. The A-side code P0E61 is documented by GM: the 2016 Volt (VICM) and the 2019 hybrid tables (HPC2) evaluate a fault flag from the line driver at 10.2 V system voltage or more, 30 bad samples out of 40 at 25 ms, Type B. Holley's 30-8405 charger unit shows why the line counts: the charger only runs with 12 V on its wake-up pin, and without it even its CAN stays silent. Specific level faults are P2E36 and P2E37, plausibility P2E38. With an open line charger B stays asleep; a car with a second charger may still charge slowly through the first.

Likely causes

Broken enable wire or backed-out terminal
Signal connector at charger B not fully latched
Failed enable driver in the commanding module

Symptoms

  • Charger B does not wake when the cable is plugged in
  • Charging slower than usual or not at all
  • Charging system warning message

Repair estimate

DifficultyHardWorkshop 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 chargerwiring harness

Related codes

P2E36P2E37P2E38P0E61

References: law.cornell.edu, gsi.ext.gm.com, gsi.ext.gm.com, documents.holley.com.