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P2471 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

Quick Answer

The P2471 code for a 2018 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature Sensor 4 Circuit High Voltage. Common causes include Faulty Exhaust Gas Temperature Sensor, Wiring or connection issues, Exhaust system leaks. 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, Wiring or connection issues, Exhaust system leaks.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P2471 2018 Chevrolet Silverado Description

The P2471 code for a 2018 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature Sensor 4 Circuit High Voltage. This sensor is responsible for monitoring the exhaust gas temperature and providing this information to the vehicle's engine control module. When the sensor detects a high voltage in the circuit, it means that there is an issue with the sensor or the wiring connected to it.

OBDII Code P2471 2018 Chevrolet Silverado - Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

Common Causes of P2471 2018 Chevrolet Silverado

  1. Faulty Exhaust Gas Temperature Sensor
  2. Wiring or connection issues
  3. Exhaust system leaks
  4. Exhaust gas temperature sensor circuit short to power
  5. Engine control module malfunction

Symptoms of P2471 2018 Chevrolet Silverado

  1. Check engine light illuminated
  2. Reduced engine performance or power
  3. Increased fuel consumption
  4. Rough idling or engine stalling
  5. Failed emissions test

How to Fix P2471 2018 Chevrolet Silverado

  1. Begin by scanning the vehicle's computer system to confirm the P2471 code and identify the specific issue.
  2. Inspect the Exhaust Gas Temperature Sensor 4 and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
  3. Check the wiring harness and connectors for any loose connections or breaks. Repair or replace damaged wiring as needed.
  4. Clear the code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to identify the root cause, such as checking the exhaust system for leaks or testing the engine control module.

Cost to Fix P2471 2018 Chevrolet Silverado

The typical repair costs for resolving the P2471 code on a 2018 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate. Keep in mind that additional costs may apply if further diagnostics or repairs are necessary.

What does this mean?

Tech Notes for P2471 2018 Chevrolet Silverado

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.

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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 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.

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