P2E9D

Code

Generic P — Powertrain

Charge Port Door B Unlock Control Circuit

Brand: Generic

Type: P — Powertrain

Views: UK: 27 EN: 27 RU: 18

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Blown fuse or tripped relay for charge-port/door circuit
Open, short-to-ground or short-to-battery in the unlock actuator wiring harness
Corroded, loose or damaged connector at the charge port door actuator
Failed charge port door B unlock actuator/solenoid (mechanical or electrical failure)
Faulty BCM/charging control module output driver or software fault
Intermittent wiring fault caused by chafing, pinched harness or water ingress

Charge port door B does not unlock on remote or vehicle command
Charge port door B may be stuck closed or cannot be opened manually/electrically
Related warning or message on instrument cluster or infotainment about charge port/charging inlet
Intermittent operation of charge port door B unlock function
Possible DTCs stored for related circuits (A side or other door)

Read freeze frame and pending codes with a scan tool; note ignition/vehicle state when code set
Verify vehicle owner actions reproduce symptom: remote, button, or charging plug insertion
Visually inspect fuses and relays for the charge-port/door circuits
Inspect connector at charge port door B actuator for corrosion, damage, and proper mating
Check harness along route for chafing, pinched wire, or water entry
Attempt to actuate charge port door unlock from a diagnostic tool and watch live data/command status

Unlock command output: typically a switched 12 V or a low-side driver; expected voltage when commanded: ~11–14 V (for high-side) or driver pulled to ~0 V (for low-side)
Idle/non-command state: expected open/0 V or battery voltage depending on design
Actuator coil resistance (typical range): ~5–100 Ω (manufacturer-specific) — expect a finite low-ohm value; open indicates broken coil, near 0 Ω indicates short
No-load current when commanded: small steady current draw consistent with a solenoid (milliamps to
Scan tool status: unlock command seen by BCM; feedback (if equipped) should indicate actuator moved or switch closed

Retrieve all related DTCs and freeze frame data; clear codes and attempt to reproduce the fault
Verify fuse and relay: inspect and measure fuse supply for circuit; replace if blown and re-test
With connector disconnected, measure actuator coil resistance at the actuator harness — compare to specification; infinite = open coil, near 0 = short
Probe the unlock control wire at the actuator harness while commanding unlock: measure voltage and/or ground switching action from the module (use back-probing or breakout box)
If no command at harness but command present at BCM output pin in scan tool, suspect wiring between BCM and harness; check continuity to harness and for shorts to ground/battery
If correct command arrives at harness but actuator does not operate, bench-test actuator with fused 12 V supply to verify operation; replace actuator if failed
Inspect and repair damaged connectors, pins, and wiring. Perform connector cleaning and apply dielectric if corrosion found
If wiring/actuator checks good and driver output is incorrect, inspect BCM grounds and power supplies; update software if manufacturer TSB suggests. Consider module replacement only after eliminating wiring and actuator faults
After repair, clear codes and perform multiple actuations and a road/usage test to confirm proper operation and no reoccurrence