Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the system that controls the shutters in front of the car's radiator. These shutters help with fuel efficiency and engine cooling, and the computer thinks the electrical signal is too high.
The active grille air shutter system helps manage airflow to improve aerodynamics and engine efficiency. A 'circuit high' condition indicates that the voltage in the circuit is higher than expected.
The P3063 code is triggered when the powertrain control module (PCM) detects a high voltage condition in the driver circuit of the active grille air shutter module 'A'. This can be due to a short circuit, a faulty module, or wiring issues.
• Check Engine Light is on
• Reduced fuel efficiency
• Overheating in some cases
• Faulty active grille air shutter module
• Short circuit in the wiring
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the active grille air shutter module for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the active grille air shutter module if faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regularly inspect the grille shutters for debris or obstruction.
• Ensure wiring and connectors are not exposed to moisture.
• Schedule regular vehicle maintenance.
Sensor Issue
• Avoid driving at high speeds until the issue is resolved.
• Monitor engine temperature closely.
• Seek professional diagnosis if unsure.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common with the increased use of active grille shutters for improved fuel efficiency.
Moderate – It may affect fuel efficiency and engine cooling, but immediate repair is not critical unless overheating occurs.
Driving with this code may not be illegal, but it is recommended to address it to ensure optimal vehicle performance.
• Engine running
• Vehicle at operating temperature
The active grille air shutter module is located at the front of the vehicle, near the radiator.
Q: Can I drive with a P3063 code?
A: Yes, but it is recommended to fix it soon to avoid potential fuel efficiency loss and overheating.
Q: How do active grille shutters work?
A: They open and close to control airflow, improving aerodynamics and engine efficiency.
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