Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that opens and closes the grille at the front. It's not working right.
The active grille air shutter system helps control airflow into the engine bay. This code indicates a problem with the control circuit for the shutter, affecting its ability to operate within the expected range.
The P2C74 code is triggered when the Powertrain Control Module (PCM) detects that the Active Grille Air Shutter 'C' is not operating within its specified range. This could be due to electrical issues, mechanical binding, or a fault in the shutter motor.
• Check Engine Light illuminated
• Reduced fuel efficiency
• Overheating in extreme conditions
• Faulty grille shutter motor
• Wiring issues in the control circuit
• Obstruction or debris in the grille shutter mechanism
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Inspect the grille shutter for obstructions or damage.
• Check the wiring and connectors for the grille shutter circuit.
• Test the grille shutter motor for proper operation.
• Clear any debris or obstructions from the grille shutter.
• Repair or replace damaged wiring or connectors.
• Replace the grille shutter motor if faulty.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect the grille for debris.
• Ensure proper maintenance of electrical systems.
• Avoid driving through deep water or heavy mud.
Sensor Issue
• Monitor fuel efficiency and engine temperature.
• Seek professional diagnosis if the Check Engine Light remains on.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
The use of active grille shutters has increased with the focus on improving fuel efficiency and aerodynamics.
Moderate – It should be addressed soon to avoid potential fuel efficiency or overheating issues.
Driving with a malfunctioning grille shutter may affect emissions and could lead to overheating.
• Vehicle at operating temperature
• Engine running
The active grille shutter is located at the front of the vehicle, behind the grille.
Q: Can I drive with a P2C74 code?
A: Yes, but it's best to get it fixed soon to avoid potential issues with fuel efficiency and engine temperature.
Q: What happens if I ignore this code?
A: Ignoring it could lead to reduced fuel efficiency and potential overheating, especially in extreme conditions.
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