P1479 Buick 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 Buick 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 Buick 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 Buick?
- 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 Buick?
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 Buick 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 Buick code?
Need more information on how to fix the P1479 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1479 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1479 Buick Code
1. What are common symptoms of OBDII code P1479 in a Buick related to the Particulate Matter Sensor Sensitivity Factor Performance?
- Common symptoms include poor vehicle performance, decreased fuel efficiency, and an illuminated check engine light.
2. What could cause the OBDII code P1479 in a Buick to trigger?
- The code P1479 is typically triggered by a faulty particulate matter sensor, a clogged sensor, or issues with the sensor sensitivity factor.
3. How can I diagnose the cause of OBDII code P1479 in my Buick?
- Diagnosis involves checking the particulate matter sensor for proper functioning, inspecting for any clogs or blockages, and verifying the sensor sensitivity factor.
4. Can a dirty air filter cause OBDII code P1479 to appear in a Buick?
- Yes, a dirty air filter can restrict airflow and lead to issues with the particulate matter sensor, potentially triggering the P1479 code.
5. What are some repair tips for resolving OBDII code P1479 in a Buick?
- Repair tips include cleaning or replacing the particulate matter sensor, ensuring proper airflow by replacing the air filter, and resetting the code after repairs are made.
6. Is it safe to continue driving my Buick with the OBDII code P1479 present?
- It is not recommended to drive with the P1479 code as it can negatively impact vehicle performance and fuel efficiency, leading to potential further damage if left unresolved.
7. Can I reset the OBDII code P1479 in my Buick without making any repairs?
- While you can clear the code temporarily, it is crucial to address the underlying issue causing the P1479 code to prevent further problems and ensure proper vehicle operation.
8. How much does it typically cost to repair OBDII code P1479 in a Buick?
- The cost of repairs for the P1479 code can vary depending on the exact cause, but it may involve sensor replacement, filter replacement, or sensor recalibration, with costs ranging from $100 to $500 or more.
9. Are there any recalls related to OBDII code P1479 in Buick vehicles?
- It is advisable to check with your Buick dealership or the National Highway Traffic Safety Administration (NHTSA) website for any recalls related to the P1479 code in your specific vehicle model.
10. Can a mechanic easily fix the OBDII code P1479 in my Buick, or is it a complex repair?
- A skilled mechanic should be able to diagnose and repair the P1479 code in your Buick, but the complexity of the repair will depend on the specific cause of the issue, requiring expertise in sensor diagnostics and potential replacements.
Discuss the causes and fixes for P1479 Buick OBDII Code
Code P1479 Buick 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.
