P1479 2014 GMC Sierra 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 2014 GMC Sierra 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.
Code P1479 2014 GMC Sierra Description
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.
What are the Possible Causes of the DTC P1479 2014 GMC Sierra?
- 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 2014 GMC Sierra?
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 2014 GMC Sierra 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 2014 GMC Sierra code?
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Frequently Asked Questions about P1479 2014 GMC Sierra Code
1. What does OBDII code P1479 for a 2014 GMC Sierra mean?
The code P1479 indicates a Particulate Matter Sensor Sensitivity Factor Performance issue on a 2014 GMC Sierra.
2. What are the common symptoms of OBDII code P1479 in a 2014 GMC Sierra?
Common symptoms of code P1479 in a 2014 GMC Sierra may include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.
3. What are the possible causes of OBDII code P1479 in a 2014 GMC Sierra?
Potential causes of code P1479 in a 2014 GMC Sierra include a faulty particulate matter sensor, wiring issues, sensor calibration problems, or a damaged sensor.
4. How can I diagnose the OBDII code P1479 in my 2014 GMC Sierra?
Diagnosing code P1479 in a 2014 GMC Sierra typically involves using an OBDII scanner to retrieve the code, inspecting the particulate matter sensor and related wiring, and conducting sensor calibration tests.
5. Can I continue driving my 2014 GMC Sierra with OBDII code P1479?
It is not recommended to continue driving your 2014 GMC Sierra with an unresolved P1479 code, as it can lead to further engine issues and potentially affect vehicle performance.
6. How can I repair OBDII code P1479 in my 2014 GMC Sierra?
Repairing code P1479 in a 2014 GMC Sierra may involve replacing the faulty particulate matter sensor, repairing any damaged wiring, calibrating the sensor, and clearing the diagnostic trouble codes.
7. Is it possible to reset OBDII code P1479 in a 2014 GMC Sierra without repairs?
While you can clear the code temporarily, it is essential to address the underlying issue causing code P1479 in a 2014 GMC Sierra to prevent further problems.
8. How much does it cost to fix OBDII code P1479 in a 2014 GMC Sierra?
The cost to repair code P1479 in a 2014 GMC Sierra can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, and labor costs.
9. Can a DIY enthusiast fix OBDII code P1479 in a 2014 GMC Sierra?
While some DIY enthusiasts may be able to address simple causes of code P1479, it is recommended to consult with a professional mechanic for an accurate diagnosis and proper repair.
10. How often does OBDII code P1479 occur in a 2014 GMC Sierra?
Code P1479 for Particulate Matter Sensor Sensitivity Factor Performance may occur infrequently in a 2014 GMC Sierra, but it is essential to address it promptly to avoid potential engine issues.
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