P1479 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?
Need more information on how to fix the P1479 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1479 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
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.
Discuss the causes and fixes for P1479 2018 Chevrolet Silverado OBDII Code
Code P1479 2018 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
