AutoCodes – GMC – P2471 2015 GMC Sierra

P2471 2015 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

Quick Answer

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include 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. 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: P2471 2015 GMC Sierra indicates Exhaust Gas Temperature Sensor 4 Circuit High Voltage.
Common causes: Common causes include 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.
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 186

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 03, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2471 2015 GMC Sierra Description

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Exhaust temperature sensor 1 is the first exhaust temperature sensor in 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 ve set when the ECM detects that the exhaust gas temperature sensor is greater than 900 Ω for greater than 2 s.

OBDII Code P2471 2015 GMC Sierra - Exhaust Gas Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P2471 2015 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2471 2015 GMC Sierra?

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
Faulty Engine Control Module (ECM)

How to Fix the DTC P2471 2015 GMC Sierra?

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 does this mean?

Code Tech Notes

After starting the engine, the exhaust gas temperature sensor temperature should rise steadily, then stabilize after the engine reaches operating temperature. Exhaust gas temperature sensors may fail intermittently while operating under extreme temperatures. Review the Freeze Frame/Failure Records to verify the failure criteria.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2471 2015 GMC Sierra 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 P2471 2015 GMC Sierra code?

Need more information on how to fix the P2471 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 P2471 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2471 on a 2015 GMC Sierra related to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- Common symptoms include poor engine performance, reduced fuel efficiency, and possibly an illuminated check engine light.

2. What are the typical causes of OBDII code P2471 on a 2015 GMC Sierra?

- The code P2471 is often triggered by a faulty exhaust gas temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.

3. How can I diagnose a potential issue with Exhaust Gas Temperature Sensor 4 on my 2015 GMC Sierra?

- Diagnosing the problem involves using an OBDII scanner to retrieve the specific code, visually inspecting the sensor and its wiring for damage, and testing the sensor's resistance.

4. Can I continue driving my 2015 GMC Sierra with OBDII code P2471 active?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the engine or emission system.

5. What steps should I take to repair OBDII code P2471 on my 2015 GMC Sierra?

- The repair process may involve replacing the Exhaust Gas Temperature Sensor 4, repairing or replacing damaged wiring or connectors, and clearing the error code with an OBDII scanner.

6. Are there any DIY tips for resolving OBDII code P2471 on a 2015 GMC Sierra?

- While some aspects of diagnosing and repairing this code can be done by DIY enthusiasts, it is recommended to seek professional help for accurate diagnosis and proper repair.

7. How critical is it to address OBDII code P2471 promptly on a 2015 GMC Sierra?

- Addressing the code promptly is crucial to prevent potential engine or emission system damage and to ensure optimal vehicle performance.

8. Can a faulty Exhaust Gas Temperature Sensor 4 cause other issues in a 2015 GMC Sierra?

- Yes, a faulty sensor can lead to inaccurate temperature readings, affecting the engine's fuel delivery and emission control systems.

9. Is resetting the check engine light enough to fix OBDII code P2471 on a 2015 GMC Sierra?

- Resetting the check engine light may temporarily clear the code, but it is essential to diagnose and repair the underlying issue to prevent the code from reoccurring.

10. How can I prevent OBDII code P2471 from appearing again on my 2015 GMC Sierra in the future?

- Regular maintenance checks, including inspecting and replacing sensors as recommended by the manufacturer, can help prevent the recurrence of this error code.