P0D15: Battery Charging System A High Voltage Interlock Circuit/Open

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.

High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

Symptoms

AC charging not possible
Charge inlet light indicates a fault

Most 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

What to check, in order

Start with the simplest. You can tick off each step.

Read the codes with a hybrid-compatible scanner and write down the freeze frame data
Check the continuity of the wire between the component and the control module.
Make sure the battery cooling air intake is clean
Check the 12 V auxiliary battery, which can also trigger warnings
Leave any high-voltage measurements to a specialized repair shop

Good to know

Repair difficulty: medium

What each character of P0D15 means

P: Powertrain: engine and transmission
0: Generic code: same on every make
D: Subsystem depends on the code range
15: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0D15?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0D15?

The most common causes are: 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.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.