P0D88: Battery Charger Coupler Status Indicator Control Circuit A High

P0D88 is stored when channel A of the charge port status indicator sits at a high level although the driver is holding it off, typically because the line touches a voltage-carrying wire or the driver stage leaks. The fault is therefore seen in the switched-off state; GM's Volt evaluated its own charge-status LED (P0D2C) for short to battery only while the LED was meant to be dark. No manufacturer documents P0D88 publicly. The visible result is often the reverse of P0D87: channel A glows constantly or faintly, so the port may suggest a charging state that does not exist. A pinched harness at the flap hinge, a bridged connector or a defective output in the control module are the causes to check. Charging works normally; P0D86 and P0D87 cover open and grounded faults of the same channel.

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

Indicator channel A lights constantly or glows faintly
Port shows a misleading charging status

Most likely causes

Channel A wire shorted to a voltage-carrying wire (pinched harness)
Bridged or corroded connector at the indicator
Leaking or failed output stage in the control module

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 sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
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 P0D88 means

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

Frequently asked questions

Can I keep driving with code P0D88?

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 P0D88?

The most common causes are: channel A wire shorted to a voltage-carrying wire (pinched harness); bridged or corroded connector at the indicator; leaking or failed output stage in the control module.

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.