Powertrain, generic · Hybrid propulsion

P0D8A Battery Charger Coupler Status Indicator Control Circuit B Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

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

Symptoms

  • Colour or segment B stays dark
  • Charging status only partly shown

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

P0D89P0D8BP0D87P0D8DP0D2C

References: gsi.ext.gm.com, law.cornell.edu, patents.google.com.