Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car has a special flap in front of the engine that opens and closes to help with air flow. This code means there's a problem with the sensor that tells the car if the flap is in the right position.
The active grille air shutter system is designed to optimize aerodynamics and regulate engine temperature. The position sensor monitors the shutter's position, and this code indicates the sensor is detecting an out-of-range position.
The P059B code is triggered when the powertrain control module (PCM) detects a range or performance problem in the active grille air shutter A position sensor circuit. This sensor is responsible for providing feedback on the position of the grille shutters, which are used to control airflow for engine cooling and aerodynamic efficiency.
• Check Engine Light illuminated
• Reduced fuel efficiency
• Overheating engine
• Unusual noises from the front of the vehicle
• Faulty grille air shutter position sensor
• Wiring issues such as open or short circuits
• Faulty grille air shutter motor
• PCM issues
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Scan the vehicle for additional codes
• Inspect the wiring and connectors for damage
• Test the grille air shutter position sensor
• Check the operation of the grille air shutter motor
• Replace the grille air shutter position sensor
• Repair or replace damaged wiring or connectors
• Replace the grille air shutter motor
• Reprogram or replace the PCM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regular inspection of the grille shutter system
• Keep the front grille clean and free of debris
• Ensure proper maintenance of electrical connections
Sensor Issue
• Avoid driving in extreme conditions until repaired
• Monitor engine temperature closely
• Consult a professional mechanic for diagnosis
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common as vehicles incorporate more aerodynamic features to improve fuel efficiency.
Moderate – While not immediately critical, it can affect fuel efficiency and engine cooling.
Ignoring this code may lead to decreased fuel efficiency and potential engine overheating.
• Engine at operating temperature
• Vehicle driven at various speeds
The active grille air shutter is located at the front of the vehicle, behind the grille.
Q: Can I drive with a P059B code?
A: It's possible to drive short distances, but it's best to have it checked soon to avoid potential engine overheating.
Q: How does the grille shutter affect my car?
A: It helps manage airflow for better fuel efficiency and engine cooling.
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