Fault Family System: Powertrain (P-Codes) 28 SAE Codes

Charging System Positive Contactor

Diagnostic & Technical Explanation

Code P0D07 sets when the battery management system commands the onboard charger's positive contactor — the switch connecting the charger's DC output to the HV bus during a plugged-in session — open or closed, and its feedback contact or the resulting bus voltage does not confirm the commanded state. The most common physical causes are contact tips pitted from repeated charge-session switching, a corroded coil-driver connector, and a failed coil winding. Because this contactor only closes while a charge session is active, an intermittent fault here often shows up as a charge session that fails to start rather than a driving-related symptom.

These 28 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 28 times.

Codes in this family (28)

Code	Definition	Repair coverage
P0D07	Battery Charging System Positive Contactor A Circuit	3 ranked fixes
P0D08	Battery Charging System Positive Contactor A Stuck Closed	3 ranked fixes
P0D09	Battery Charging System Positive Contactor A Stuck Open	3 ranked fixes
P0D0A	Battery Charging System Positive Contactor A Control Circuit/Open	3 ranked fixes
P0D0B	Battery Charging System Positive Contactor A Control Circuit Range/Performance	3 ranked fixes
P0D0C	Battery Charging System Positive Contactor A Control Circuit Low	3 ranked fixes
P0D0D	Battery Charging System Positive Contactor A Control Circuit High	3 ranked fixes
P2BC4	Battery Charging System Positive Contactor B Circuit	3 ranked fixes
P2BC5	Battery Charging System Positive Contactor B Stuck Closed	3 ranked fixes
P2BC6	Battery Charging System Positive Contactor B Stuck Open	3 ranked fixes
P2BC7	Battery Charging System Positive Contactor B Control Circuit/Open	3 ranked fixes
P2BC8	Battery Charging System Positive Contactor B Control Circuit Range/Performance	3 ranked fixes
P2BC9	Battery Charging System Positive Contactor B Control Circuit Low	3 ranked fixes
P2BCA	Battery Charging System Positive Contactor B Control Circuit High	3 ranked fixes
P2D5B	Battery Charging System Positive Contactor C Circuit	3 ranked fixes
P2D5C	Battery Charging System Positive Contactor C Stuck Closed	3 ranked fixes
P2D5D	Battery Charging System Positive Contactor C Stuck Open	3 ranked fixes
P2D5E	Battery Charging System Positive Contactor C Control Circuit/Open	3 ranked fixes
P2D5F	Battery Charging System Positive Contactor C Control Circuit Range/Performance	3 ranked fixes
P2D60	Battery Charging System Positive Contactor C Control Circuit Low	3 ranked fixes
P2D61	Battery Charging System Positive Contactor C Control Circuit High	3 ranked fixes
P2D69	Battery Charging System Positive Contactor D Circuit	3 ranked fixes
P2D6A	Battery Charging System Positive Contactor D Stuck Closed	3 ranked fixes
P2D6B	Battery Charging System Positive Contactor D Stuck Open	3 ranked fixes
P2D6C	Battery Charging System Positive Contactor D Control Circuit/Open	3 ranked fixes
P2D6D	Battery Charging System Positive Contactor D Control Circuit Range/Performance	3 ranked fixes
P2D6E	Battery Charging System Positive Contactor D Control Circuit Low	3 ranked fixes
P2D6F	Battery Charging System Positive Contactor D Control Circuit High	3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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