Powertrain, generic · Hybrid propulsion

P0D0B Battery Charging System Positive Contactor A Control Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D0B reports that the control circuit of positive charging contactor A works electrically but does not behave plausibly – coil current or line voltage outside the window expected for the commanded state, or a response that comes too slowly. No manufacturer documents P0D0B publicly. The nearest documented test is GM's P0D0A on the Chevrolet Volt, which matches commanded and actual driver state and judges coil current, and CARB requires plug-in vehicles to check charging components for circuit and rationality faults. Typical triggers are contact resistance in connectors, a coil whose resistance has drifted, or a weakening driver stage. Opens are P0D0A, low and high signals P0D0C/P0D0D, mechanical sticking P0D08/P0D09. Charging may work only now and then or be refused.

Likely causes

Contact resistance or corrosion in the control circuit connectors
Contactor coil with changed resistance
Weakening driver stage in the control module

Symptoms

  • Charging sessions fail sporadically
  • Stored code, possibly with a charging system warning

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,500
Time1–5 h

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

Parts involved

bcs pos contactor awiring harnessbms

Related codes

P0D0AP0D0CP0D0DP0D09P0D12

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