AutoCodes – Chevrolet – P1479 Chevrolet

P1479 Chevrolet Code - Particulate Matter Sensor Sensitivity Factor Performance

Quick Answer

The Particulate Matter (PM) sensor monitors the amount of the particulates (soot) in the diesel exhaust gas exiting the tailpipe. Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection. 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 Chevrolet indicates Particulate Matter Sensor Sensitivity Factor Performance.
Common causes: Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection.
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.

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Code Popularity 542

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1479 Chevrolet Description

The Particulate Matter (PM) sensor monitors the amount of the particulates (soot) in the diesel exhaust gas exiting the tailpipe. The PM sensor is similar to the heated oxygen sensor with a ceramic element but also includes an individually calibrated Sensor Control Unit (SCU). The sensing element includes comb-shaped Interdigital Electrodes (IDE), a heater and a positive temperature coefficient resistor for temperature measurement.
The operation of the PM Sensor is based on the electrical conductivity characteristic of the diesel particulate. As the exhaust gas flows over the sensing element, soot is absorbed in the combs between the electrodes, eventually creating a conductive path. When the path is formed, it generates a current based on the voltage being applied to the element. The measurement process continues until a preset current value is reached. To avoid misleading readings, the sensor performs a regeneration where the soot is cleaned off by heating up the element before the measurement phase begins. The amount of regenerations is based on vehicle strategy; when the calibrated number of regenerations is reached, the cumulative current readings are used to determine the amount of soot concentration in the exhaust gas which in turn determines the collection efficiency of the Diesel Particulate Filter (DPF).
The Diagnostic Trouble Code (DTC) will be set when the particular matter sensor control unit detects a fault in the particulate matter sensor circuitry.

OBDII Code P1479 Chevrolet - Particulate Matter Sensor Sensitivity Factor Performance - AutoCodes.com — P1479 Chevrolet Code - Particulate Matter Sensor Sensitivity Factor Performance

What does this mean?

What are the Possible Causes of the DTC P1479 Chevrolet?

Faulty Exhaust Particulate Matter Sensor
Exhaust Particulate Matter Sensor harness is open or shorted
Exhaust Particulate Matter Sensor circuit poor electrical connection

How to Fix the DTC P1479 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1479 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1479 Chevrolet code?

Need more information on how to fix the P1479 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1479 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P1479 2014 Chevrolet Silverado — Particulate Matter Sensor Sensitivity Factor Performance
P1479 2015 Chevrolet Silverado — Particulate Matter Sensor Sensitivity Factor Performance
P1479 2016 Chevrolet Silverado — Particulate Matter Sensor Sensitivity Factor Performance
P1479 2017 Chevrolet Silverado — Particulate Matter Sensor Sensitivity Factor Performance
P1479 2018 Chevrolet Silverado — Particulate Matter Sensor Sensitivity Factor Performance

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 Chevrolet Code

1. What are common symptoms of OBDII code P1479 in a Chevrolet related to the Particulate Matter Sensor Sensitivity Factor Performance?

Symptoms may include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What are some possible causes of OBDII code P1479 in a Chevrolet?

Potential causes could be a faulty particulate matter sensor, issues with the sensor wiring or connectors, or problems with the sensor sensitivity factor.

3. How can I diagnose the OBDII code P1479 in my Chevrolet?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the particulate matter sensor for any visible damage, and inspecting the wiring and connectors for any issues.

4. Can I drive my Chevrolet with OBDII code P1479 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and decreased performance. It is best to address the issue promptly.

5. How can I repair OBDII code P1479 in a Chevrolet?

Repair options may include replacing the faulty particulate matter sensor, repairing any damaged wiring or connectors, and resetting the code with an OBDII scanner.

6. Are there any simple checks I can perform before taking my Chevrolet to a mechanic for OBDII code P1479?

You can visually inspect the sensor and its wiring for any obvious issues, ensure the sensor is securely connected, and check for any loose or damaged components in the sensor system.

7. Will OBDII code P1479 cause my Chevrolet to fail an emissions test?

Yes, this code can potentially cause your vehicle to fail an emissions test due to the impact on engine performance and emissions control.

8. How much does it typically cost to repair OBDII code P1479 in a Chevrolet?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500, including parts and labor.

9. Can a DIY enthusiast without much experience address OBDII code P1479 in a Chevrolet?

While some basic repairs like sensor replacement or wiring checks can be done by a DIY enthusiast, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

10. Is OBDII code P1479 a common issue in Chevrolet vehicles?

While not as common as some other OBDII codes, P1479 related to the Particulate Matter Sensor Sensitivity Factor Performance can occur in Chevrolet vehicles equipped with this sensor system.