What it means
Active Grille Air Shutter A Performance Stuck Off: the actuator is stuck in the off position. Active grille shutters manage airflow for engine cooling and aerodynamics.
At a glance
- Usually lights the check-engine light
How it works
Active Grille Air Shutter A changes grille airflow to balance cooling and aerodynamic drag. The control module compares commanded movement with the position feedback; this code sets when Shutter A fails to move from its off position as expected, potentially leaving the shutters closed.
Common causes
Most likely first.
- Shutter jammed by debris or ice
- Carbon or debris buildup preventing free movement
- Component wear with age - mechanical play
Symptoms
- Check-engine light
- Active grille shutter warning, if equipped
- Shutters may remain closed
- Engine may run hotter than usual
How to diagnose it
- Check freeze-frame data and live commanded versus reported Shutter A position to confirm that the assembly is not moving from off.
- With the vehicle safely parked and the engine off, inspect the grille for ice, stones, leaves, or other debris blocking Shutter A.
- Look for binding slats, damaged linkage, or mechanical play that prevents the shutter from traveling.
- Use the scan tool's available actuator test and observe whether Shutter A responds without obstruction.
- If the mechanism is free but does not respond, inspect its actuator connector and wiring, then test the actuator using the manufacturer's procedure.
Common fixes
- Remove debris or ice obstructing Shutter A.
- Clean buildup that prevents the shutter slats or linkage from moving freely.
- Repair or replace worn, loose, or damaged linkage.
- Replace the actuator if it fails its commanded movement test despite clear wiring and free linkage.
Can I keep driving?
Because Shutter A may remain closed, avoid heavy loads or prolonged driving if engine temperature climbs. Stop safely if the engine overheats; continued overheating can cause serious engine damage.
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.