What it means
Active Grille Air Shutter C 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 C is one of the movable shutters that regulates airflow through the grille for cooling and aerodynamic control. P05FE indicates that shutter C's performance check found it stuck in the off position instead of responding as expected.
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 may turn on
- Active grille shutter warning or related fault message, if equipped
How to diagnose it
- Record freeze-frame data and scan for other grille-shutter or cooling-system codes that may identify a shared actuator or supply problem.
- With the vehicle off, inspect shutter C and the surrounding grille for ice, leaves, debris, bent slats, or visible mechanical damage.
- Check shutter C's connector and harness for looseness, corrosion, chafing, or damage from road debris.
- Use scan-tool active tests, if supported, to command shutter C and observe whether it moves freely and whether its reported position changes.
- If the shutter is clear and wiring is intact, test its actuator and position feedback circuit using the manufacturer's specification.
Common fixes
- Remove debris or ice that is physically blocking shutter C.
- Repair a loose connector or damaged wire at the shutter assembly.
- Correct binding or mechanical damage in shutter C if the assembly can be serviced.
- Replace the shutter C actuator or assembly if it fails the commanded movement or feedback test.
Can I keep driving?
A stuck grille shutter may affect airflow and cooling, especially in demanding conditions, though the code alone does not show that the engine is overheating. Watch the temperature gauge, avoid heavy loads if temperature rises, and address the fault 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.