AutoCodes – Chevrolet – P2479 Chevrolet

P2479 Chevrolet Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 2

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P2479 Chevrolet indicates Exhaust Gas Temperature Out of Range Bank 1 Sensor 2.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 1,399
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 15, 2019
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Code P2479 Chevrolet Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P2479 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P2479 Chevrolet - Exhaust Gas Temperature Out of Range Bank 1 Sensor 2 - AutoCodes.com
P2479 Chevrolet Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 2

What are the Possible Causes of the DTC P2479 Chevrolet?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How to Fix the DTC P2479 Chevrolet?

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 P2479 Chevrolet 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 P2479 Chevrolet code?

Need more information on how to fix the P2479 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2479 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2479 Chevrolet Code

1. What are the common symptoms of OBDII code P2479 in a Chevrolet related to Exhaust Gas Temperature Out of Range Bank 1 Sensor 2?

- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2479 in a Chevrolet?

- The code P2479 can be triggered by issues such as a faulty exhaust gas temperature sensor, damaged wiring or connectors, exhaust leaks, or a malfunctioning catalytic converter.

3. How can I diagnose the OBDII code P2479 in a Chevrolet?

- Diagnosing the code typically involves using an OBDII scanner to retrieve the code, checking the exhaust gas temperature sensor readings, inspecting the wiring and connectors, and conducting a thorough inspection of the exhaust system.

4. What is the importance of fixing OBDII code P2479 in a Chevrolet promptly?

- It is important to address code P2479 promptly as it can lead to further damage to the engine, emissions system, and catalytic converter if left unresolved, impacting overall vehicle performance.

5. Can I drive my Chevrolet with OBDII code P2479 active?

- It is not recommended to drive your Chevrolet with the code P2479 active, as it can cause potential damage to the engine and emissions system. It is advisable to address the issue as soon as possible.

6. How can I repair OBDII code P2479 in a Chevrolet?

- Repairing the code P2479 may involve replacing the exhaust gas temperature sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or replacing a faulty catalytic converter, depending on the root cause of the issue.

7. Are there any DIY tips for addressing OBDII code P2479 in a Chevrolet?

- While some basic inspections and checks can be done DIY, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper resolution of the code P2479.

8. How much does it typically cost to fix OBDII code P2479 in a Chevrolet?

- The cost of fixing OBDII code P2479 can vary depending on the underlying cause of the issue, parts needed for replacement, labor costs, and local market rates. It is advisable to obtain quotes from reputable auto repair shops.

9. Can a faulty exhaust gas temperature sensor cause OBDII code P2479 in a Chevrolet?

- Yes, a faulty exhaust gas temperature sensor is one of the common causes of triggering code P2479 in a Chevrolet, as it can provide inaccurate readings leading to the out-of-range error.

10. How long does it take to repair OBDII code P2479 in a Chevrolet?

- The repair time for OBDII code P2479 can vary depending on the exact cause of the issue, availability of parts, and the expertise of the mechanic. It is best to consult with a professional for a more accurate estimate.

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