What it means
The control circuit of active grille air shutter C reports a range/performance condition. Actuator response or current draw outside calibration.
At a glance
- Usually lights the check-engine light
How it works
Active grille shutter C uses an actuator and control circuit to move the shutter in response to cooling and airflow needs. This code indicates that the circuit's response or electrical behavior is outside its expected range, such as movement that is too slow or abnormal current draw; it does not by itself identify a stuck-open condition.
Common causes
Most likely first.
- Actuator response slower than expected
- High-resistance contact in connector
- Sensor element aged beyond calibration window
Symptoms
- Check-engine light
- Reduced fuel economy
- Active grille shutter warning, if equipped
How to diagnose it
- Save freeze-frame data and compare commanded and reported positions for shutter C, if position data is available.
- Inspect shutter C's blades and linkage for debris, binding, ice, or damage that could slow its response.
- Check the actuator connector and wiring for corrosion, loose terminals, chafing, or water intrusion that could add resistance.
- Use a scan tool's actuator test, if supported, to observe shutter C movement and whether it follows commands smoothly.
- If the mechanism and wiring are clear, test actuator current and position feedback against the manufacturer's specification.
Common fixes
- Clear debris or ice and free the shutter C linkage.
- Repair poor connections or damaged shutter C wiring.
- Replace a slow or binding shutter C actuator.
- Replace the position sensor or shutter assembly if feedback remains outside specification.
Can I keep driving?
Driving is usually possible if engine temperature remains normal and no other warnings appear, though fuel economy or cooling airflow may be affected. Watch the temperature gauge and stop if an overheating warning appears.
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.