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P1479 2018 Chevrolet Silverado Code - Particulate Matter Sensor Sensitivity Factor Performance

Quick Answer

The P1479 diagnostic trouble code (DTC) on a 2018 Chevrolet Silverado indicates an issue with the Particulate Matter Sensor Sensitivity Factor Performance. Common causes include Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to inaccurate readings, Wiring Issues: Damaged or corroded wiring connected to the sensor can cause communication issues, Sensor Sensitivity Factor: A problem with the sensor's sensitivity factor settings can trigger the P1479 code. 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 2018 Chevrolet Silverado indicates Particulate Matter Sensor Sensitivity Factor Performance.
Common causes
Common causes include Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to inaccurate readings, Wiring Issues: Damaged or corroded wiring connected to the sensor can cause communication issues, Sensor Sensitivity Factor: A problem with the sensor's sensitivity factor settings can trigger the P1479 code.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1479 2018 Chevrolet Silverado Description

The P1479 diagnostic trouble code (DTC) on a 2018 Chevrolet Silverado indicates an issue with the Particulate Matter Sensor Sensitivity Factor Performance. This sensor is a crucial component of the vehicle's emissions control system, specifically designed to monitor the amount of particulate matter in the exhaust gases. Particulate matter consists of tiny particles that can be harmful to both human health and the environment.

OBDII Code P1479 2018 Chevrolet Silverado - Particulate Matter Sensor Sensitivity Factor Performance
P1479 2018 Chevrolet Silverado Code - Particulate Matter Sensor Sensitivity Factor Performance

Common Causes of P1479 2018 Chevrolet Silverado

  1. Faulty Particulate Matter Sensor: The sensor itself may be malfunctioning, leading to inaccurate readings.
  2. Wiring Issues: Damaged or corroded wiring connected to the sensor can cause communication issues.
  3. Sensor Sensitivity Factor: A problem with the sensor's sensitivity factor settings can trigger the P1479 code.
  4. Exhaust System Leak: A leak in the exhaust system can affect the sensor's readings and trigger the code.

Symptoms of P1479 2018 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P1479 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: The vehicle may experience a decrease in fuel efficiency due to inaccurate emissions readings.
  3. Failed Emissions Test: If the particulate matter sensor is not functioning correctly, the vehicle may fail emissions tests.
  4. Rough Idle: In some cases, the engine may exhibit rough idling or hesitation during acceleration.

How to Fix P1479 2018 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific DTC and pinpoint the cause of the P1479 code.
  2. Inspect Wiring: Check the wiring connected to the particulate matter sensor for any damage or corrosion. Repair or replace as needed.
  3. Test Sensor: Test the functionality of the sensor itself to determine if it is faulty. Replace if necessary.
  4. Reset the Code: After completing the repairs, clear the code from the vehicle's computer system to see if the issue has been resolved.
  5. Emissions Test: Once the repair is complete, perform an emissions test to ensure the vehicle is now within acceptable levels.

Cost to Fix P1479 2018 Chevrolet Silverado

The typical repair costs for addressing the P1479 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a faulty particulate matter sensor can cost between $200 to $500, including parts and labor. However, if the issue is related to wiring or other components, the cost may increase. Additionally, diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is advisable to check with local repair shops for a more accurate estimate based on your location and vehicle specifics.

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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.

Frequently Asked Questions about P1479 2018 Chevrolet Silverado Code

1. What does the P1479 code mean on a 2018 Chevrolet Silverado?

The P1479 code indicates an issue with the Particulate Matter Sensor Sensitivity Factor Performance, which monitors and measures the amount of soot in the exhaust system.

2. What are the common symptoms of the P1479 code in a Chevy Silverado?

Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, and issues with the diesel particulate filter (DPF).

3. What causes the P1479 code to appear?

Common causes include a faulty particulate matter sensor, a damaged DPF, wiring or connection issues, or an updated software calibration requirement for the engine control module (ECM).

4. Can I still drive my 2018 Silverado with the P1479 code?

Driving with this code is possible but not recommended, as it can lead to reduced engine performance, potential damage to the DPF, and increased emissions.

5. How is the P1479 code diagnosed?

A technician will use an OBDII scanner to verify the code, inspect the particulate matter sensor and its wiring, and check the DPF for excessive soot buildup or damage.

6. How do you fix the P1479 code on a Chevy Silverado?

Repairs may include cleaning or replacing the particulate matter sensor, addressing wiring issues, cleaning the DPF, or updating the ECM software.

7. How much does it cost to fix the P1479 code?

The cost can vary depending on the exact issue but typically ranges from $200 to $600, including parts and labor.

8. Can a dirty diesel particulate filter cause the P1479 code?

Yes, a clogged or dirty DPF can restrict exhaust flow, affecting the particulate matter sensor's performance and triggering the code.

9. Does the P1479 code require a software update for the ECM?

In some cases, reprogramming or updating the ECM software may be necessary to resolve the code if no other faults are found.

10. How can I prevent the P1479 code from occurring again?

Regular maintenance, such as cleaning the DPF, using high-quality fuel, and addressing exhaust system issues promptly, can help prevent this code from reappearing.

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