P2C75: Active Grille Air Shutter Module C Over Temperature

What it means

The control module of active grille air shutter C reports junction temperature above its protection threshold. Thermal protection has triggered.

At a glance

• Usually lights the check-engine light

How it works

The control module for active grille shutter C drives and monitors that shutter's actuator. This code sets when the module's internal temperature rises above its protection limit, so it may restrict shutter operation to protect itself.

Common causes

Most likely first.

1. Under-bonnet temperature too high
2. Sustained stall current

Symptoms

• Check-engine light
• Active grille shutter warning, if equipped
• Grille shutter operation may be limited

How to diagnose it

1. Save freeze-frame data and note ambient and under-bonnet temperature conditions when the code set.
2. Inspect shutter C and its linkage for obstruction or binding that could make the actuator work against a stall.
3. Check the shutter C actuator and module connectors for corrosion, moisture, looseness, or heat damage.
4. Inspect the actuator wiring for a short or damaged insulation that could cause sustained high current.
5. If the mechanism and wiring are clear, test actuator current and module temperature readings using the manufacturer's procedure.

Common fixes

• Remove debris or ice and free a binding shutter C mechanism.
• Repair damaged wiring or poor connections that cause excess actuator current.
• Replace a failing shutter C actuator if it draws sustained stall current.
• Replace the shutter C control module if its temperature sensing or thermal protection circuit has failed.

Can I keep driving?

You can usually continue driving if there are no engine temperature warnings, but shutter C may be limited and airflow management can be affected. Monitor the temperature gauge and stop if the engine overheats.