Engine-CodesChevrolet – P2471 2017 Chevrolet Silverado

P2471 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

Quick Answer

The P2471 diagnostic trouble code for a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature Sensor 4 Circuit High Voltage. Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning and sending incorrect voltage readings to the ECM, Wiring Issues: Damaged or corroded wiring in the sensor circuit can cause high voltage readings, ECM Malfunction: A problem with the engine control module can also trigger the P2471 code. 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 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 4 Circuit High Voltage.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning and sending incorrect voltage readings to the ECM, Wiring Issues: Damaged or corroded wiring in the sensor circuit can cause high voltage readings, ECM Malfunction: A problem with the engine control module can also trigger the P2471 code.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P2471 2017 Chevrolet Silverado Description

The P2471 diagnostic trouble code for a 2017 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 feedback to the vehicle's engine control module (ECM). When the sensor detects a voltage higher than normal in the circuit, it triggers the P2471 code. This issue can affect the vehicle's performance by causing incorrect fuel mixture ratios, reduced engine efficiency, and potential damage to the catalytic converter. If left unaddressed, it can lead to increased emissions, decreased fuel economy, and engine misfires.

OBDII Code P2471 2017 Chevrolet Silverado - Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 4 Circuit High Voltage

Common Causes of P2471 2017 Chevrolet Silverado

  1. Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning and sending incorrect voltage readings to the ECM.
  2. Wiring Issues: Damaged or corroded wiring in the sensor circuit can cause high voltage readings.
  3. ECM Malfunction: A problem with the engine control module can also trigger the P2471 code.
  4. Exhaust System Leaks: Leaks in the exhaust system can affect the sensor readings and lead to a high voltage condition.
  5. Exhaust Gas Recirculation (EGR) System Problems: Issues with the EGR system can also impact the sensor's operation and trigger the code.

Symptoms of P2471 2017 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in power and acceleration due to incorrect fuel mixture ratios.
  3. Increased Emissions: The vehicle may fail emissions tests or emit excessive pollutants due to the faulty sensor.
  4. Rough Idling: The engine may idle erratically or stall at times due to the sensor issue.
  5. Poor Fuel Economy: The vehicle may consume more fuel than usual due to inefficient engine operation caused by the faulty sensor.

How to Fix P2471 2017 Chevrolet Silverado

  1. Diagnostic Testing: Begin by using a scan tool to retrieve and document the code, then perform a thorough inspection of the exhaust gas temperature sensor and its circuit.
  2. Sensor Replacement: If the sensor is found to be faulty, replace it with a new, OEM equivalent part.
  3. Wiring Repair: Check the wiring harness for any damage or corrosion, and repair or replace as necessary.
  4. ECM Reset: Clear the code from the ECM memory, and reset the system to see if the issue persists.
  5. Exhaust System Inspection: Inspect the exhaust system for leaks or damage that may be affecting the sensor's readings, and repair as needed.

Cost to Fix P2471 2017 Chevrolet Silverado

The typical repair costs for addressing a P2471 code on a 2017 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, it's important to note that actual costs may vary depending on the specific diagnosis time, labor rates, and the location of the repair shop. It's recommended to obtain quotes from multiple auto repair shops to get a more accurate estimate.

Tech Notes for P2471 2017 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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2471 in a 2017 Chevrolet Silverado?

The common symptoms of code P2471 include the Check Engine Light coming on, reduced engine power, and potentially higher exhaust gas temperatures.

2. What does OBDII code P2471 on a 2017 Chevrolet Silverado indicate?

Code P2471 indicates a high voltage condition in the circuit of Exhaust Gas Temperature Sensor 4 in the Chevrolet Silverado's exhaust system.

3. What are the possible causes of OBDII code P2471 in a 2017 Chevrolet Silverado?

Possible causes of code P2471 include a faulty Exhaust Gas Temperature Sensor 4, wiring issues in the sensor circuit, or a problem with the sensor's connector.

4. How can I diagnose the OBDII code P2471 in my 2017 Chevrolet Silverado?

Diagnosing code P2471 involves using an OBDII scanner to retrieve the code, checking the sensor and its wiring for any visible damage, and testing the sensor's resistance and voltage output.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P2471?

It is not recommended to continue driving your Silverado with code P2471 active, as it can lead to potential engine damage and decreased performance.

6. Are there any DIY repair tips for fixing OBDII code P2471 in a 2017 Chevrolet Silverado?

DIY repair tips include checking and cleaning the sensor connector, inspecting the wiring for any breaks or shorts, and replacing the Exhaust Gas Temperature Sensor 4 if necessary.

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

The cost of repairing code P2471 can vary depending on the exact cause, but it may involve replacing the Exhaust Gas Temperature Sensor 4, which can range from $100 to $200 including parts and labor.

8. Can a faulty Exhaust Gas Temperature Sensor cause other issues in a 2017 Chevrolet Silverado?

Yes, a faulty Exhaust Gas Temperature Sensor can cause issues such as poor fuel efficiency, increased emissions, and potentially harm the engine if not addressed promptly.

9. How long does it usually take to repair OBDII code P2471 in a 2017 Chevrolet Silverado?

The repair time for code P2471 can vary based on the exact cause and the availability of parts, but it typically takes around 1-2 hours at a repair shop.

10. Is it necessary to reset the OBDII code P2471 after repairing the issue in a 2017 Chevrolet Silverado?

Yes, after repairing the issue causing code P2471, it is essential to clear the code using an OBDII scanner to reset the Check Engine Light and ensure the problem has been resolved.

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