P1479 2015 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 2015 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 2015 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 2015 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 2015 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 2015 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 2015 Chevrolet Silverado Code
What does OBDII code P1479 mean for a 2015 Chevrolet Silverado?
P1479 indicates an issue with the Particulate Matter Sensor Sensitivity Factor Performance, which means the sensor detecting soot levels in the exhaust system is not operating within expected parameters.
What are the common symptoms of code P1479 in a 2015 Chevrolet Silverado?
Symptoms may include the check engine light turning on, reduced engine performance, poor fuel economy, or increased exhaust emissions.
What causes the P1479 code to appear in a 2015 Chevrolet Silverado?
Common causes include a faulty particulate matter sensor, wiring or connector issues, sensor contamination, or an issue with the engine control module (ECM) software.
Can I drive my 2015 Chevrolet Silverado with the P1479 code?
Driving with this code is not recommended, as it can lead to higher emissions, potential damage to the exhaust system, and reduced fuel efficiency.
How is the P1479 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the particulate matter sensor and its wiring, and may test the sensor’s performance using diagnostic tools.
How do you fix the P1479 code on a 2015 Chevrolet Silverado?
Repairs may involve cleaning or replacing the particulate matter sensor, repairing damaged wiring or connectors, or updating the ECM software.
Is the particulate matter sensor expensive to replace?
The cost of replacing the particulate matter sensor varies but typically ranges from $200 to $500, depending on labor and part costs.
Can a dirty diesel particulate filter (DPF) cause the P1479 code?
Yes, a clogged or malfunctioning DPF can cause incorrect readings from the particulate matter sensor, potentially triggering the P1479 code.
How do I prevent the P1479 code from recurring?
Regular maintenance, using high-quality fuel, avoiding extended idling, and ensuring the DPF is clean can help prevent sensor-related issues.
Will clearing the P1479 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P1479 2015 Chevrolet Silverado OBDII Code
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