What it means
The control module detected a fault in the charge port door A unlock control circuit. The fault may prevent the door from unlocking as commanded.
At a glance
- Usually lights the check-engine light
How it works
The charge port door A unlock control circuit carries the module's command to release the door lock, usually through an actuator. This code sets when the module detects an electrical fault in that command circuit, which can stop the actuator from unlocking the door.
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
- Read freeze-frame data and use scan-tool output controls, if available for the vehicle, to command the door A unlock while observing actuator response.
- Inspect the door latch and actuator area for obstruction, damage, or a jammed mechanism that could prevent release.
- Check the actuator connector and harness for loose terminals, corrosion, breaks, or shorts using the vehicle wiring diagram.
- Test actuator power, ground, and control-circuit continuity during an unlock command, comparing results with the manufacturer's specification.
- If the actuator and wiring pass, check the module's unlock output and input conditions before considering a module fault.
Common fixes
- Clear an obstruction and free a mechanically binding door latch.
- Reconnect or repair corroded or loose actuator terminals.
- Repair damaged wiring in the door A unlock control circuit.
- Replace a failed unlock actuator after confirming its supply and control circuit are sound.
Can I keep driving?
Driving is generally possible if the charge port door is closed and secure, but it may remain locked when you need to charge. Avoid forcing the door, which can damage the latch or bodywork.
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.