AutoCodes – Chevrolet – P2471 Chevrolet

P2471 Chevrolet 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 Chevrolet 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 4,872

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 Chevrolet 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 Chevrolet - Exhaust Gas Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P2471 Chevrolet Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2471 Chevrolet?

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 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 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 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 P2471 Chevrolet code?

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

Need Help with the Code?

Get the P2471 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P2471 2014 Chevrolet Silverado — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2015 Chevrolet Silverado — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2016 Chevrolet Silverado — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2017 Chevrolet Silverado — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2018 Chevrolet Silverado — Exhaust Gas Temperature Sensor 4 Circuit High Voltage

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 Chevrolet Code

1. What are the common symptoms of OBDII code P2471 in a Chevrolet related to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

The common symptoms include the Check Engine Light illuminating on the dashboard, reduced engine performance, and potential issues with the exhaust system.

2. What are the possible causes of OBDII code P2471 in a Chevrolet indicating a high voltage in Exhaust Gas Temperature Sensor 4 Circuit?

Possible causes include a faulty exhaust gas temperature sensor, a damaged sensor wiring harness, a problem with the sensor connector, or issues with the sensor circuit's power supply.

3. How can I diagnose the OBDII code P2471 in my Chevrolet related to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the sensor and its wiring for visible damage, and testing the sensor's resistance and voltage output using a multimeter.

4. Can I continue driving my Chevrolet with OBDII code P2471 triggered by the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

It is not recommended to drive your vehicle with this code present as it can lead to reduced fuel efficiency, increased emissions, and potential damage to the engine or catalytic converter.

5. How can I repair OBDII code P2471 in a Chevrolet caused by a high voltage issue in Exhaust Gas Temperature Sensor 4 Circuit?

Repair options include replacing the faulty exhaust gas temperature sensor, repairing or replacing the wiring harness or connector, and clearing the trouble code with an OBDII scanner after the repairs are completed.

6. Is it possible to reset the OBDII code P2471 in a Chevrolet without addressing the underlying issue with the Exhaust Gas Temperature Sensor 4 Circuit?

Resetting the code without fixing the root cause may temporarily turn off the Check Engine Light, but the issue will likely reoccur, leading to potential long-term problems and failures.

7. How critical is it to address OBDII code P2471 in a Chevrolet related to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage promptly?

Addressing this code promptly is crucial to prevent further damage to the vehicle, ensure optimal engine performance, and maintain compliance with emissions regulations.

8. Can extreme weather conditions or driving habits trigger OBDII code P2471 in a Chevrolet due to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

Extreme weather conditions or aggressive driving habits can potentially exacerbate existing issues with the exhaust gas temperature sensor, leading to the triggering of this code.

9. Are there any preventive maintenance steps that can help avoid OBDII code P2471 related to the Exhaust Gas Temperature Sensor 4 Circuit High Voltage in a Chevrolet?

Regularly inspecting the exhaust system components, addressing any sensor-related issues promptly, and following the manufacturer's recommended maintenance schedule can help prevent this code from appearing.

10. Should I seek professional help to diagnose and repair OBDII code P2471 in my Chevrolet caused by the Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

If you are not experienced in automotive diagnostics and repairs, it is advisable to seek professional help from a certified mechanic or dealership to accurately diagnose and address the issue.