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

Battery Charger Coupler Lock Status

Diagnostic & Technical Explanation

Code P0D86 sets when the control module does not see the expected feedback from the charge coupler's mechanical lock/status switch — the plug-retention solenoid and its sense contact disagree with the commanded lock or unlock state. The most common physical causes are debris or corrosion in the coupler's lock mechanism preventing full engagement, a worn or misaligned sense-switch contact inside the charge inlet, and chafed low-voltage wiring between the inlet and the control module. Because this switch only confirms the mechanical latch state, it is diagnosed and replaced without touching the HV bus.

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
P0D86	Battery Charger Coupler Status Indicator Control Circuit A/Open	3 ranked fixes
P0D87	Battery Charger Coupler Status Indicator Control Circuit A Low	3 ranked fixes
P0D88	Battery Charger Coupler Status Indicator Control Circuit A High	3 ranked fixes
P0D89	Battery Charger Coupler Status Indicator Control Circuit B/Open	3 ranked fixes
P0D8A	Battery Charger Coupler Status Indicator Control Circuit B Low	3 ranked fixes
P0D8B	Battery Charger Coupler Status Indicator Control Circuit B High	3 ranked fixes
P0D8C	Battery Charger Coupler Status Indicator Control Circuit C/Open	3 ranked fixes
P0D8D	Battery Charger Coupler Status Indicator Control Circuit C Low	3 ranked fixes
P0D8E	Battery Charger Coupler Status Indicator Control Circuit C High	3 ranked fixes
P0D91	Battery Charger Coupler Lock Control Circuit/Open	3 ranked fixes
P0D92	Battery Charger Coupler Lock Control Circuit Low	3 ranked fixes
P0D93	Battery Charger Coupler Lock Control Circuit High	3 ranked fixes
P0D94	Battery Charger Coupler Lock Control Circuit Performance	3 ranked fixes
P0D95	Battery Charger Coupler Unlock Control Circuit/Open	3 ranked fixes
P0D96	Battery Charger Coupler Unlock Control Circuit Low	3 ranked fixes
P0D97	Battery Charger Coupler Unlock Control Circuit High	3 ranked fixes
P0D98	Battery Charger Coupler Unlock Control Circuit Performance	3 ranked fixes
P0D9E	Battery Charger A Coupler Lock Position Sensor Circuit	3 ranked fixes
P0D9F	Battery Charger A Coupler Lock Position Sensor Circuit Range/Performance	3 ranked fixes
P0DA0	Battery Charger A Coupler Lock Position Sensor Circuit Low	3 ranked fixes
P0DA1	Battery Charger A Coupler Lock Position Sensor Circuit High	3 ranked fixes
P0DA2	Battery Charger A Coupler Lock Position Sensor Circuit Intermittent/Erratic	3 ranked fixes
P0EF0	Battery Charger Coupler Unlock Disabled - High Voltage Present	3 ranked fixes
P2DBC	Battery Charger B Coupler Lock Position Sensor Circuit	3 ranked fixes
P2DBD	Battery Charger B Coupler Lock Position Sensor Circuit Range/Performance	3 ranked fixes
P2DBE	Battery Charger B Coupler Lock Position Sensor Circuit Low	3 ranked fixes
P2DBF	Battery Charger B Coupler Lock Position Sensor Circuit High	3 ranked fixes
P2DC0	Battery Charger B Coupler Lock Position Sensor Circuit Intermittent/Erratic	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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