Powertrain, generic (extended)

P2E3D Battery Charger B Output Shorted

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E3D points to a short on the high-voltage output side of charger B. No manufacturer documents P2E3D publicly. GM's test for the A-side code P0D23 shows how such a short is found: while the charger contactor is only precharging and the multi-purpose contactor is open, hardly any current should flow, so more than 0.35 A on the charger bus in 4 of 5 samples at 100 ms sets the code as One Trip Type A, both in the 2011 Volt and in the 2016 Cadillac ELR tables. The test is suspended while output current sensor faults are active. Supplier chargers such as Holley's 30-8405 build in output short-circuit protection that shuts the stage down. Causes are an internal short in charger B, a damaged HV cable or a contactor path that leaks. Charging is blocked; current deviations alone are P2E3C.

Likely causes

Internal short in the charger B output stage
Damaged high-voltage cable between charger B and battery
Leaking or stuck contactor path in the charging circuit

Symptoms

  • Charging blocked as soon as the cable is plugged in
  • High-voltage or charging system warning

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€300–2,500
Time1–5 h

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

Parts involved

on board chargerwiring harness

Related codes

P2E3CP2E3BP2E39P0D23

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