Engine-CodesGMC – P1479 2017 GMC Sierra

P1479 2017 GMC Sierra Code - Particulate Matter Sensor Sensitivity Factor Performance

Quick Answer

The P1479 diagnostic trouble code (DTC) on a 2017 GMC Sierra relates to the Particulate Matter Sensor Sensitivity Factor Performance. Common causes include Sensor Malfunction: The sensor itself may be faulty or damaged, leading to inaccurate readings, Wiring Issues: Problems with the wiring connected to the sensor can also trigger this code, Software Glitch: An issue with the vehicle's engine control module (ECM) software can cause the sensor sensitivity factor to perform poorly. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1479 2017 GMC Sierra indicates Particulate Matter Sensor Sensitivity Factor Performance.
Common causes
Common causes include Sensor Malfunction: The sensor itself may be faulty or damaged, leading to inaccurate readings, Wiring Issues: Problems with the wiring connected to the sensor can also trigger this code, Software Glitch: An issue with the vehicle's engine control module (ECM) software can cause the sensor sensitivity factor to perform poorly.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P1479 2017 GMC Sierra Description

The P1479 diagnostic trouble code (DTC) on a 2017 GMC Sierra relates to the Particulate Matter Sensor Sensitivity Factor Performance. This code indicates that there is an issue with the sensitivity factor of the particulate matter sensor, which is responsible for monitoring the amount of soot or particulate matter emitted by the vehicle's diesel engine. The sensor plays a crucial role in ensuring that the vehicle meets emissions standards and operates efficiently.

OBDII Code P1479 2017 GMC Sierra - Particulate Matter Sensor Sensitivity Factor Performance
P1479 2017 GMC Sierra Code - Particulate Matter Sensor Sensitivity Factor Performance

Common Causes of P1479 2017 GMC Sierra

  1. Sensor Malfunction: The sensor itself may be faulty or damaged, leading to inaccurate readings.
  2. Wiring Issues: Problems with the wiring connected to the sensor can also trigger this code.
  3. Software Glitch: An issue with the vehicle's engine control module (ECM) software can cause the sensor sensitivity factor to perform poorly.
  4. Exhaust System Blockage: A blockage in the exhaust system can affect the sensor's ability to accurately measure particulate matter levels.

Symptoms of P1479 2017 GMC Sierra

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A malfunctioning particulate matter sensor can lead to decreased fuel efficiency as the engine may not be operating optimally.
  3. Poor Performance: The vehicle may experience a decrease in performance, such as reduced power or acceleration.
  4. Increased Emissions: The vehicle may emit higher levels of particulate matter, which can be harmful to the environment.

How to Fix P1479 2017 GMC Sierra

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific trouble code and pinpoint the exact cause of the problem.
  2. Inspect Sensor and Wiring: Check the particulate matter sensor and its wiring for any signs of damage or corrosion.
  3. Clear Fault Codes: Clear the fault codes and see if the issue persists. If the code returns, further investigation is needed.
  4. Replace Sensor: If the sensor is found to be faulty, replace it with a new one and ensure it is properly calibrated.
  5. Check Exhaust System: Inspect the exhaust system for any blockages or leaks that may be affecting the sensor's performance.

Cost to Fix P1479 2017 GMC Sierra

The cost of repairing a P1479 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a particulate matter sensor can range from $200 to $500, including parts and labor. Additional costs may apply if there are wiring issues or other components that need to be addressed. It's recommended to consult with a qualified mechanic to get an accurate estimate based on your vehicle's specific needs and location. Labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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