P0D8A: Battery Charger Coupler Status Indicator Control Circuit B Low

P0D8A means channel B of the charge port status indicator is held at ground level when it ought to rise, i.e. a short to ground on the B line or inside its lamp. The inlet is one of the most exposed electrical points of the car: rain, car-wash water and road salt reach it every time the flap opens, so corroded or wet contacts that bridge to ground are a frequent finding. No manufacturer documents P0D8A publicly; the closest published logic is GM's P0D2C test on the Volt, which checks for a grounded LED line while the lamp is commanded on and sets a Type B fault. The channel normally switches off to protect its driver, so the related colour or segment remains dark. Charging is not restricted. P0D89 covers an open B circuit, P0D8B a short to voltage.

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

Colour or segment B stays dark
Charging status only partly shown

Most likely causes

Wet or corroded contacts at the inlet lighting bridging to ground
Channel B wire chafed through to body ground
Shorted LED or segment of channel B

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
With the connector unplugged, check whether the signal wire is making contact with ground.
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 P0D8A means

P: Powertrain: engine and transmission
0: Generic code: same on every make
D: Subsystem depends on the code range
8A: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0D8A?

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 P0D8A?

The most common causes are: wet or corroded contacts at the inlet lighting bridging to ground; channel B wire chafed through to body ground; shorted LED or segment of channel B.

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.