What it means
The charge port door A unlock control reports a unlock control circuit low condition. Door cannot be commanded to unlock reliably.
At a glance
- Usually lights the check-engine light
How it works
The door A unlock actuator is controlled through an electrical circuit, and the module monitors the circuit's signal level when it commands the door to unlock. This code sets when that level is lower than expected, which can happen if the signal is shorted to ground or the actuator or connector pulls it down.
Common causes
Most likely first.
- Wire shorted to ground
- Actuator internal short
- Connector pins corroded - high contact resistance
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Save freeze-frame data and check charge-port status information to confirm the fault occurred during an unlock command for door A.
- Inspect the door A actuator connector and wiring for corrosion, chafing, crushed insulation, or a wire contacting ground.
- Check the connector pins for corrosion or poor contact, since resistance at the connection can disrupt the circuit reading.
- With the circuit safely isolated as specified by the manufacturer, test for a short to ground and inspect the actuator for an internal short.
- Check circuit continuity and commanded actuator operation, comparing measurements with the manufacturer's specification.
Common fixes
- Clean and secure corroded or loose terminals at the door A actuator connector.
- Repair wiring shorted to ground in the door A unlock circuit.
- Replace the actuator if testing confirms an internal short.
- Repair any damaged connector pins and verify the door unlocks reliably.
Can I keep driving?
A low circuit fault can leave charge port door A locked, preventing charging or interrupting it. Avoid depending on a charge session until the door unlocks reliably, and have the circuit repaired soon.
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.