Powertrain, generic (extended)

P2EB4 Hybrid/EV Battery Inductive Charger High Voltage Interlock Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

With inductive charging, the vehicle coil picks up high-frequency power from a ground pad and an on-board rectifier turns it into DC for the traction battery; SAE J2954 defines classes up to 11 kW around 85 kHz. Because this path carries high voltage, its plugs and covers sit in a high voltage interlock loop, a low-voltage signal wire that breaks as soon as a connector is pulled or a lid removed. P2EB4 says this loop of the inductive charger is open, and the charging path stays switched off. GM shows how a charging loop is checked on the Volt: the module feeds 5 V and compares the returned share, with a low reading set as type A. P2D35 covers implausible loop signals. No manufacturer documents P2EB4 publicly. Typical causes are an unseated connector after repair, a bent pin or a broken loop wire.

Likely causes

HV connector or cover of the charger not fully latched
Bent or pushed-back interlock pin
Broken or chafed interlock wire
Fault in the interlock evaluation of the module

Symptoms

  • Inductive charging does not start or stops
  • Charging fault message

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€50–900
Time0.5–3 h

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

Parts involved

hv inductive chargerhv interlock loopwiring harness

Related codes

P2D35P2D33P0D15P0A0A

References: en.wikipedia.org, gsi.ext.gm.com, law.cornell.edu.