P2D69

Code

Generic P — Powertrain

Battery Charging System Positive Contactor D Circuit

Brand: Generic

Type: P — Powertrain

Views: UK: 20 EN: 21 RU: 19

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Page language: EN

Causes

Open or short in contactor D wiring or connector
Corroded, loose, or damaged contactor connector terminals
Failed or welded contactor (mechanical or electrical failure)
Blown fuse or tripped safety interlock in the charging/contactor supply circuit
Faulty Battery Management System (BMS) / charger control module or driver output
Poor high-voltage isolation or insulation damage causing fault

Symptoms

Charging disabled or charge rate limited
HV system warning or battery fault indicator illuminated
Charger connection shows error or refuses to energize
Vehicle may not enter ready/drive state (HV interlock fault)
Intermittent charging, or charging works only after multiple attempts
Possible high-voltage system fault codes alongside P2D69

What to check

Obtain and record freeze-frame and related DTCs with a diagnostic scanner
Check vehicle for HV system warning lamps and any charger/EVSE error messages
Visually inspect contactor D, mating connectors, wiring harness, and associated fuses/isolators for damage or corrosion
Verify proper interlock/fuse status for the charging circuit
With appropriate HV safety procedures, check continuity of contactor coil and harness between BMS/charger and contactor
Using a scanner, compare commanded contactor D state vs. actual state and monitor associated live data parameters

Signal parameters

Contactor D command vs actual: command = CLOSED/OPEN; actual should match when safe to operate (use scan tool live data)
Coil/solenoid resistance: expected to show continuity and be within manufacturer specification (open or short indicates fault)
Control/driver voltage: when commanded CLOSED the control circuit should present the appropriate supply voltage from BMS/charger; when OPEN the control should be de-energized (voltage states are manufacturer-specific)
Charger enable signal: when contactor closes, charger enable/current should be observed in live data (no enable indicates upstream fault)
Insulation/continuity: high-voltage positive path should show expected isolation from ground per OEM spec

Diagnostic algorithm

Safety first: follow OEM high-voltage procedures. Disable HV system, remove service disconnects, and use proper PPE before inspecting or measuring HV components.
Scan and record all DTCs and live data. Note whether other HV contactor or charging codes are present.
Perform visual inspection of contactor D, connectors, wiring harness, fuses, and related interlocks for heat damage, corrosion, loose pins, or contamination.
Check fuses and service interlocks in the charging positive supply. Replace any blown fuses and re-test.
With HV system disabled and isolated, measure continuity of the contactor coil and compare to spec. Check terminals for corrosion or loose pins.
Re-enable HV system per OEM safety steps. Use a diagnostic tool to command contactor D closed and monitor command vs actual status and coil supply voltage. Observe whether contactor energizes and if status feedback changes.
If the contactor does not respond to a command but coil supply voltage is present, the contactor is likely failed — remove and bench-test/replace per procedure.
If there is no coil supply or the driver signal is absent, trace wiring back to the BMS/charger control module and test connectors and driver outputs. Repair wiring or replace module as required.
After repair, clear codes, perform a controlled charging test and verify that contactor operates reliably and no related DTCs return.
If intermittent, perform road/charge cycle testing and repeated command tests to reproduce and confirm repair.
If unsure or HV work is required beyond basic checks, refer to OEM wiring diagrams and safety/service manuals or refer to a qualified high-voltage technician.

Likely causes

Damaged harness between BMS/charger and contactor D
Contactor coil shorted or open (welded contacts or coil failure)
Connector corrosion or pushed-out terminal causing open circuit
Control module driver transistor or relay for the contactor failed
Fused circuit upstream of contactor is open

Fault status

⚠️ Status

Controller detected fault in Battery Charging System Positive Contactor D circuit (open/short/inconsistent state). Charging may be disabled. Inspection and repair of contactor, wiring, fuses, or control module required.

🔴 Repair difficulty: Hard

⏱️ Diagnostic time: 1.5-4.0 hours