P0D8BBattery Charger Coupler Status Indicator Control Circuit B High
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D8B is set when the B line of the charge port status indicator carries voltage while its driver has it switched off. The detection logic mirrors what GM published for the Volt's charge-status LED (P0D2C): a short to battery is looked for during the off phase. No manufacturer documents P0D8B itself. In everyday use the consequence can be more confusing than a dark lamp: segment or colour B stays lit, so the port may display a charge level or state that does not match reality, which matters when owners rely on the light to check progress. Insulation damage where the harness bends at the flap, a connector bridged by moisture or a stuck driver output are the main candidates. Charging is unaffected. P0D89 and P0D8A are the open and low faults of channel B.
- What you may notice
- Colour or segment B stays lit
- Displayed charge level does not match the actual state
- Likely causes
- LikelyInsulation damage where the harness bends at the flap, contact with a supply wire
- PossibleConnector bridged by moisture
- RareDriver output in the control module stuck on
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.