AutoCodes – GMC – P2472 GMC

P2472 GMC Code - Exhaust Gas Temperature Sensor 4 Circuit Intermittent

Quick Answer

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 4, Exhaust Gas Temperature Sensor 4 harness is open or shorted. 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
P2472 GMC indicates Exhaust Gas Temperature Sensor 4 Circuit Intermittent.
Common causes
Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 4, Exhaust Gas Temperature Sensor 4 harness is open or shorted.
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 1,403
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 26, 2021
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Code P2472 GMC Description

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The Exhaust Gas Temperature Sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the Exhaust Gas Temperature Sensor resistance has changed greater than a calibrated amount in less than 1 s.
OBDII Code P2472 GMC - Exhaust Gas Temperature Sensor 4 Circuit Intermittent - AutoCodes.com
P2472 GMC Code - Exhaust Gas Temperature Sensor 4 Circuit Intermittent

What are the Possible Causes of the DTC P2472 GMC?

  • Exhaust leaks
  • Faulty Exhaust Gas Temperature Sensor (EGTS) 4
  • Exhaust Gas Temperature Sensor 4 harness is open or shorted
  • Exhaust Gas Temperature Sensor 4 circuit poor electrical connection
  • Excessive particulate matter buildup on sensor
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2472 GMC?

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 P2472 GMC 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 P2472 GMC code?

Need more information on how to fix the P2472 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2472 GMC Code

1. What are the common symptoms of OBDII code P2472 GMC?

The common symptoms of code P2472 include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What could cause the OBDII code P2472 GMC to trigger?

The code P2472 is typically triggered by a faulty Exhaust Gas Temperature Sensor 4, issues with the sensor circuit, wiring problems, or a poor electrical connection.

3. How serious is the OBDII code P2472 GMC?

While the code P2472 may not cause immediate harm to the vehicle, it is important to address the underlying issue promptly to prevent potential damage to the engine or emissions system.

4. How can I diagnose the OBDII code P2472 GMC?

Diagnosing code P2472 involves using a scan tool to retrieve the code, inspecting the Exhaust Gas Temperature Sensor 4 and its circuit, checking for wiring faults, and testing the sensor's functionality.

5. Can I still drive my vehicle with the OBDII code P2472 GMC present?

It is generally not recommended to drive with the P2472 code present, as it can lead to decreased engine performance and potential long-term damage if left unresolved.

6. What is the typical repair for OBDII code P2472 GMC?

The typical repair for code P2472 involves replacing the faulty Exhaust Gas Temperature Sensor 4, repairing any wiring issues, and clearing the code from the vehicle's memory.

7. Are there any DIY tips for addressing the OBDII code P2472 GMC?

While some DIY enthusiasts may attempt to replace the sensor themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the issue is properly resolved.

8. How much does it cost to fix the OBDII code P2472 GMC?

The cost of fixing code P2472 can vary depending on the cause of the issue, the labor rates in your area, and whether any additional repairs are needed. It is advisable to obtain quotes from local repair shops for an accurate estimate.

9. Can a faulty Exhaust Gas Temperature Sensor 4 cause other problems in the vehicle?

Yes, a faulty sensor can lead to a variety of issues such as poor engine performance, increased emissions, and potential damage to other components if left unresolved.

10. How can I prevent the OBDII code P2472 GMC from recurring?

To prevent the recurrence of code P2472, it is important to address any underlying issues promptly, perform regular vehicle maintenance, and avoid driving habits that may put strain on the exhaust system.

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