Powertrain, generic · Hybrid propulsion

P0D8B Battery Charger Coupler Status Indicator Control Circuit B High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Insulation damage where the harness bends at the flap, contact with a supply wire
Connector bridged by moisture
Driver output in the control module stuck on

Symptoms

  • Colour or segment B stays lit
  • Displayed charge level does not match the actual state

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€30–500
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

battery charger coupler status indicator bwiring harnesson board charger

Related codes

P0D89P0D8AP0D88P0D8EP0D2C

References: gsi.ext.gm.com, fordservicecontent.com, law.cornell.edu.