P2E9E

Code

Generic P — Powertrain

Charge Port Door B Unlock Control Circuit Performance

Brand: Generic

Type: P — Powertrain

Views: UK: 18 EN: 32 RU: 21

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open, short or high resistance in wiring or connector for the charge port B unlock circuit
Corroded, loose or damaged connector at charge port door actuator
Failed charge port door B actuator/motor or solenoid
Blown fuse or faulty relay supplying the unlock circuit
Faulty body control module (BCM) / charge port controller output stage
Mechanical binding or obstruction preventing door from unlocking

Symptoms

Charge port door B fails to unlock or is intermittent
Charge port door may unlock slowly or stop mid-travel
DTC present and Charge Port Door B shows fault in scan tool
Possible warning or message on dash related to charging or door
Unable to access charge inlet B for charging

What to check

Scan for stored/active DTCs and freeze frame data; check for related network/communication codes
Visually inspect wiring harness and connectors at charge port door B and at controlling module for damage/corrosion/pin push-out
Check fuses and relays powering the unlock circuit
Use a scan tool to command the unlock and observe live data and feedback
Measure voltage at the actuator connector while commanding unlock (multimeter or scope)
Measure resistance of actuator coil/motor (with battery disconnected)

Signal parameters

Control type: switched battery feed or module low-side driver; may be steady or PWM depending on design
Expected voltage at actuator when commanded: approximately battery voltage (12–14.5 V) or switched 0 V to battery; inactive typically 0 V or battery depending on design
Typical actuator current draw: small DC motor/solenoid range 0.1–3 A (varies by design) — excessive or no current indicates fault
Resistance of actuator coil/motor (typical ballpark): single-digit to low tens of ohms; exact spec from service manual required
Response time: actuator should begin movement within ~0–2 seconds of command

Diagnostic algorithm

Read and record DTC(s) and freeze frame. Note if code is steady or intermittent.
Attempt to operate charge port door B using the scan tool while watching live data. Confirm command is sent and whether any feedback is present.
Visually inspect connector and wiring to the charge port door B actuator. Look for corrosion, bent pins, water intrusion, chafing, or repair harness sections.
Check relevant fuses and relays for the unlock circuit and replace if faulty.
With ignition on and using a helper or remote command, measure voltage at the actuator connector while commanding unlock. Compare to expected battery voltage. No voltage indicates wiring/fuse/module issue.
With battery disconnected, measure actuator resistance. Open/short or out-of-spec resistance suggests failed actuator. If available, bench-test actuator with appropriate voltage to confirm operation.
If voltage is present but actuator does not move, remove actuator and inspect mechanical linkage for binding, ice/debris, or seized parts. Lubricate or repair as required.
Perform continuity and short-to-ground/power checks from the module connector to the actuator connector. Repair wiring faults as found.
If wiring and actuator test good, consider module output driver failure. Check for other symptoms of a faulty BCM/charge port controller and verify module software/calibration. Replace or reprogram module per manufacturer procedures if confirmed.
Clear codes and retest multiple cycles and road/temperature conditions to confirm repair.