Powertrain, generic · Hybrid propulsion

P0D0A Battery Charging System Positive Contactor A Control Circuit/Open

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D0A covers the drive circuit of positive charging contactor A: the module compares the commanded state of its driver with the voltage and current it actually sees on the coil line. GM spells this out for the Chevrolet Volt and Cadillac ELR: with the driver off, an output above 4 V means an open line and one close to supply voltage a short to power; with the driver on, coil current below 57 mA (Volt 2019: 194 mA) also counts as open. 40 of 50 samples at 12.5 ms set the code. The 2011 and 2014 Volt and the ELR rate it Type A, the 2016 and 2019 Volt Type B with MIL after two trips. GM adds that the test cannot see a short to ground. Range/performance, low and high are P0D0B–P0D0D. Without a working contactor the car will not charge.

Likely causes

Open or high-resistance coil control wire or connector
Contactor coil open
Control wire shorted to a supply voltage
Faulty high-side driver in the control module

Symptoms

  • Malfunction indicator lamp (GM Type A or B)
  • Vehicle does not charge

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 harnessbmshybrid control module

Related codes

P0D07P0D09P0D0BP0D0CP0D0DP0D11

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com.