Powertrain, generic

P0E2E Battery Charger A Fuse

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0E2E concerns the high-voltage fuse that protects the branch from the battery to on-board charger A. Battery managements usually judge such a fuse by comparing the voltage ahead of and behind it, as Volvo describes for its HV fuses. Audi documents P0E2E00 for the 2022 Q5 plug-in hybrid: the hybrid battery regulation module J840 stores it intermittently with symptom code 28733, often next to P0A95, and the driver sees an electrical system fault message or the car does not start. According to Audi, a diagnostic irregularity during very dynamic cornering creates the entry without a real defect; replacing the switching unit, as guided fault finding suggests, does not help, a software update does. A truly open charger fuse stops AC charging. P0A95, P0E2F and P0E30 cover other HV fuses.

Likely causes

False entry from the battery management software (Audi Q5 PHEV)
Fuse opened after a short in the on-board charger or its cable
Faulty voltage measurement at the fuse

Symptoms

  • Electrical system fault message
  • No AC charging or vehicle does not start

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–3,000
Time0.5–4 h

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

Parts involved

high voltage fuseon board chargerbattery energy control module

Related codes

P0A95P0E2FP0E30

References: static.nhtsa.gov, static.nhtsa.gov.