P1479 2017 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 2017 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 2017 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 2017 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 2017 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 2017 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.
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Frequently Asked Questions about P1479 2017 Chevrolet Silverado Code
1. What does the OBDII code P1479 mean on a 2017 Chevrolet Silverado?
P1479 indicates an issue with the particulate matter (PM) sensor sensitivity factor performance, suggesting the sensor isn’t detecting or reporting particulate matter levels accurately.
2. What are common symptoms of the P1479 code in a 2017 Chevy Silverado?
Typical symptoms include a check engine light, decreased fuel efficiency, reduced engine performance, or excessive exhaust smoke.
3. What causes the P1479 code to appear on a Chevrolet Silverado?
Common causes include a faulty particulate matter sensor, damaged wiring or connectors, software calibration issues, or excessive soot buildup in the exhaust system.
4. Can I drive my 2017 Chevrolet Silverado with a P1479 code?
While the vehicle may still be drivable, it’s not recommended as it can lead to poor emissions performance and potential damage to the exhaust system if not addressed.
5. How is the P1479 code diagnosed on a Chevy Silverado?
A technician will use a scan tool to confirm the code, inspect the particulate matter sensor and wiring for damage, check for excessive soot buildup, and verify proper sensor calibration.
6. What repairs are typically needed to fix the P1479 code?
Repairs may include replacing the particulate matter sensor, cleaning the exhaust system, repairing damaged wiring or connectors, or updating the engine control module (ECM) software.
7. How much does it cost to fix the P1479 code on a 2017 Silverado?
The repair cost can vary but typically ranges from $200 to $600, depending on whether the issue is with the sensor, wiring, or calibration.
8. Can a clogged particulate filter trigger the P1479 code?
Yes, a clogged diesel particulate filter (DPF) can cause excessive soot, which may lead to inaccurate readings from the particulate matter sensor and trigger the code.
9. Is the P1479 code covered under warranty for a 2017 Chevrolet Silverado?
It depends on your vehicle’s warranty. If your Silverado is still under the emissions warranty, the repair may be covered. Check with your dealer for details.
10. How can I prevent the P1479 code from recurring?
Regular maintenance, such as cleaning the DPF, using high-quality fuel, and ensuring the exhaust system is in good condition, can help prevent the P1479 code from reappearing.
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