AutoCodes – Generic – P2471

P2471 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 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 39,175

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

What does this mean?

What are the Possible Causes of the DTC P2471?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

P2471 Chevrolet — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 Dodge — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4
P2471 Ford — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4
P2471 GMC — Exhaust Gas Temperature Sensor 4 Circuit High Voltage
P2471 RAM — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4

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 Code

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

- The common symptoms include the Check Engine Light being illuminated, decreased fuel efficiency, and possible rough engine operation.

2. What are the possible causes of OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- The possible causes include a faulty exhaust gas temperature sensor, wiring issues or shorts in the sensor circuit, or a problem with the engine control module (ECM).

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

- Diagnosing the issue involves using an OBDII scanner to read the code, inspecting the exhaust gas temperature sensor and its wiring for any visible damage, and testing the sensor's resistance.

4. Can I still drive my vehicle with OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to potential engine damage or safety issues. It's best to address the issue promptly.

5. How can I repair OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- Repairing the issue may involve replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring, or addressing any issues with the engine control module (ECM).

6. Are there any tips for preventing OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage in the future?

- Regular maintenance, such as inspecting and replacing sensors as needed, checking wiring for damage, and addressing any engine performance issues promptly, can help prevent this code from reoccurring.

7. Is it safe to reset the Check Engine Light related to OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- While you can reset the Check Engine Light, it's important to address the underlying issue causing the code first to prevent further damage to the vehicle.

8. Can a DIY enthusiast fix OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this issue, especially if they have experience working on automotive electrical systems.

9. Is it necessary to visit a mechanic for OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- While it's not always necessary, seeking professional help from a mechanic is recommended if you're unsure about diagnosing or repairing the issue yourself.

10. How much does it cost to repair OBDII code P2471 Exhaust Gas Temperature Sensor 4 Circuit High Voltage?

- The cost can vary depending on the cause of the issue, the labor rates in your area, and whether you choose to replace the sensor yourself or have a mechanic do the work.