AutoCodes – Chevrolet – P2471 2018 Chevrolet Silverado

P2471 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 559

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Exhaust Gas Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P2471 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2471 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P2471 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2471 2018 Chevrolet Silverado 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 P2471 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2471 in a 2018 Chevrolet Silverado?

When the Exhaust Gas Temperature Sensor 4 Circuit shows high voltage, you may experience reduced engine performance, increased fuel consumption, and the illumination of the check engine light.

2. What causes the OBDII code P2471 to trigger in a 2018 Chevrolet Silverado?

The P2471 code typically triggers due to issues with the Exhaust Gas Temperature Sensor 4 Circuit, such as a faulty sensor, damaged wiring, or a poor electrical connection.

3. How can I diagnose the OBDII code P2471 in my 2018 Chevrolet Silverado?

To diagnose the P2471 code, you can use an OBDII scanner to read the code and inspect the Exhaust Gas Temperature Sensor 4 wiring and connections for any visible damage or corrosion.

4. Can I continue to drive my 2018 Chevrolet Silverado with OBDII code P2471 active?

It is not recommended to drive your Silverado with the P2471 code present, as it can lead to potential engine damage and further issues if left unresolved.

5. What are the repair options for fixing OBDII code P2471 in a 2018 Chevrolet Silverado?

Repair options for the P2471 code include replacing the Exhaust Gas Temperature Sensor 4, repairing any damaged wiring, and ensuring proper electrical connections are in place.

6. How much does it cost to repair OBDII code P2471 in a 2018 Chevrolet Silverado?

The cost of repairing the P2471 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Are there any DIY tips for addressing OBDII code P2471 in a 2018 Chevrolet Silverado?

While diagnosing and repairing the P2471 code may require some technical expertise, you can start by checking the sensor connections and wiring for any obvious issues before seeking professional help.

8. Can a faulty Exhaust Gas Temperature Sensor cause other problems besides triggering the P2471 code?

Yes, a malfunctioning Exhaust Gas Temperature Sensor can affect engine performance, fuel efficiency, and emission levels, leading to potential long-term issues if not addressed promptly.

9. How long does it take to repair OBDII code P2471 in a 2018 Chevrolet Silverado?

The repair time for the P2471 code can vary depending on the extent of the issue and the availability of parts, but it typically takes a few hours to a half-day for a mechanic to diagnose and fix the problem.

10. Is it necessary to reset the OBDII system after repairing the P2471 code in a 2018 Chevrolet Silverado?

Yes, it is recommended to clear the OBDII system after fixing the P2471 code to reset the check engine light and ensure the issue has been successfully resolved.