Powertrain, generic (extended)

P2D5E Battery Charging System Positive Contactor C Control Circuit/Open

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

P2D5E concerns the wire that energises the coil of plus-side contactor C, not its power contacts: the module finds that the state of its output driver and that of the line disagree, typically because a wire or the coil winding is broken. No manufacturer documents P2D5E publicly. GM's check of the contactor A counterpart (P0D0A) gives typical criteria: an output reading above 4 V while switched off, or under 57 mA of coil current while on, counts as an open; 40 bad results out of 50, sampled every 12.5 ms, are needed, and the 2016 Volt rates it Type B (two trips), the ELR Type A. Look for a broken wire, a terminal backed out of its plug or an open coil. Range, low and high are P2D5F–P2D61. Contactor C cannot pull in, so its charging mode is lost.

Likely causes

Broken coil feed wire or pushed-back terminal

Coil winding of contactor C open

Output stage in the module defective

Symptoms

Charging in the affected mode not possible
Fault present continuously, not only while charging
Charging warning in the cluster

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 cwiring harnessbms

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