What it means
The charge port door B unlock control reports a circuit condition. Door cannot be commanded to unlock reliably.
At a glance
- Usually lights the check-engine light
How it works
The Door B unlock control circuit carries the command that releases the charge-port door, usually by operating an unlock actuator. P2E9D sets when the charging system controller detects a fault in that control circuit, so the door may not unlock when commanded.
Common causes
Most likely first.
- Unlock actuator failed
- Wiring fault
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Check freeze-frame data and related charging faults, then command Door B to unlock with the appropriate scan-tool function if available and observe whether the actuator responds.
- Inspect the Door B latch or actuator area and its wiring for damage, obstruction, moisture, or a loose connector.
- Check the actuator connector and circuit for poor contact, open wiring, or a short, following the vehicle wiring diagram.
- Test the unlock actuator and control circuit as specified by the manufacturer, taking care not to force the charge-port door.
- If the actuator and wiring pass, verify the controller’s output and related power and ground connections.
Common fixes
- Remove an obstruction and secure a loose actuator connector.
- Repair damaged or open wiring in the Door B unlock circuit.
- Replace a failed Door B unlock actuator or latch assembly.
- Repair a controller output connection if circuit testing confirms the fault.
Can I keep driving?
Driving is generally possible if the charge-port door is closed and latched, but you may be unable to access the port and charging could be delayed. Do not force the door or drive with it unsecured; seek assistance if it will not latch.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.