AutoCodes – GMC – P2471 2017 GMC Sierra

P2471 2017 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 2017 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 168

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 2017 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 2017 GMC Sierra - Exhaust Gas Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P2471 2017 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2471 2017 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 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P2471 2017 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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P2471 in a 2017 GMC Sierra?

- Common symptoms include reduced engine performance, increased fuel consumption, and possibly the illumination of the Check Engine Light.

2. What does the OBDII code P2471 on a 2017 GMC Sierra indicate?

- The code P2471 indicates a high voltage condition detected in the circuit of Exhaust Gas Temperature Sensor 4 in the vehicle's exhaust system.

3. What are the potential causes of OBDII code P2471 in a 2017 GMC Sierra?

- Possible causes of this code include a faulty Exhaust Gas Temperature Sensor 4, wiring issues in the sensor circuit, or a problem with the sensor's connection.

4. How can I diagnose the OBDII code P2471 in a 2017 GMC Sierra?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the code, inspecting the wiring and connections of the Exhaust Gas Temperature Sensor 4, and testing the sensor itself for proper function.

5. Can I continue driving my 2017 GMC Sierra with OBDII code P2471?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential engine damage or other issues. It's best to address the problem promptly.

6. Is it possible to reset the OBDII code P2471 in a 2017 GMC Sierra?

- While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P2471 in a 2017 GMC Sierra?

- The cost of repairing this code can vary depending on the root cause. It may involve replacing the Exhaust Gas Temperature Sensor 4, repairing wiring issues, or addressing other related components.

8. Are there any DIY repair tips for fixing OBDII code P2471 in a 2017 GMC Sierra?

- DIY repair tips may include checking the sensor's wiring for damage, ensuring proper sensor connections, and testing the sensor's resistance to determine if it's faulty before replacing it.

9. Can a faulty Exhaust Gas Temperature Sensor 4 cause other issues in a 2017 GMC Sierra?

- Yes, a faulty sensor can lead to poor engine performance, increased emissions, and potential damage to other components if left unresolved.

10. How important is it to address OBDII code P2471 promptly in a 2017 GMC Sierra?

- It is crucial to address this code promptly to prevent further engine damage, ensure optimal performance, and maintain fuel efficiency in your 2017 GMC Sierra.