Powertrain, generic · Hybrid propulsion

P0D15 Battery Charging System A High Voltage Interlock Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D15 reports an open high-voltage interlock loop in charging system A. This low-voltage loop runs through the connectors and covers of the charging path – inlet, charger and their HV leads – and breaks as soon as one of them is unplugged, so the module can keep that path de-energised. It is separate from the interlock of battery and drive, which uses P0A0A ff. Volvo stores P0D1513 in the on-board charger of the 2021–2023 XC40 Recharge when AC charging fails; bulletin TJ 36522 blames catches on the AC HV connector between inlet and charger that were not fully closed at the plant and has the connector reseated and latched. GM's Volt and ELR monitor such a charging loop with a 5 V source, and a Ford patent describes interlock shorting bars in connectors. Other loop faults are P0D16–P0D19.

Likely causes

HV connector in the charging path not fully seated or latched (Volvo XC40)
Broken interlock wire or pushed-back terminal
Missing or loose cover on a charging component

Symptoms

  • AC charging not possible
  • Charge inlet light indicates a fault

Repair estimate

DifficultyMediumWorkshop 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

bcs a hv interlockwiring harnesson board charger

Related codes

P0D16P0D17P0D18P0D19P0A0A

References: static.nhtsa.gov, gsi.ext.gm.com, patents.google.com.