AutoCodes – GMC – P2476 GMC

P2476 GMC Code - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 4, Exhaust Gas Temperature Sensor Bank 2 Sensor 4 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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
P2476 GMC indicates Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 4, Exhaust Gas Temperature Sensor Bank 2 Sensor 4 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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 1,056
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 15, 2019
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Code P2476 GMC Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P2476 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P2476 GMC - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4 - AutoCodes.com
P2476 GMC Code - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4

What are the Possible Causes of the DTC P2476 GMC?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 4
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 4 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 4 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How to Fix the DTC P2476 GMC?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2476 GMC 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 P2476 GMC code?

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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 P2476 GMC Code

1. What are common symptoms of OBDII code P2476 GMC?

- Common symptoms include reduced fuel efficiency, reduced engine performance, and the illumination of the Check Engine light.

2. What does the OBDII code P2476 GMC indicate?

- The code indicates a high circuit voltage from the Exhaust Gas Temperature (EGT) Sensor in Bank 2 Sensor 4.

3. What are possible causes of OBDII code P2476 GMC?

- Possible causes include a faulty EGT sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module (ECM).

4. How can I diagnose OBDII code P2476 GMC?

- Diagnosing the code involves using a scan tool to read the code, inspecting the EGT sensor and its wiring for damage, and testing the sensor's resistance and voltage.

5. Can I drive my vehicle with OBDII code P2476 GMC?

- It is not recommended to drive with this code present, as it can lead to further damage and reduced engine performance.

6. How can I repair OBDII code P2476 GMC?

- Repair options include replacing the faulty EGT sensor, repairing or replacing damaged wiring or connectors, and resetting the ECM to clear the code.

7. Is OBDII code P2476 GMC a serious issue?

- While it may not cause immediate harm to the vehicle, it is important to address the underlying issue to prevent further damage and ensure optimal engine performance.

8. What tools are needed to diagnose OBDII code P2476 GMC?

- Tools needed may include a scan tool for code reading, a multimeter for testing sensor resistance and voltage, and basic hand tools for sensor and wiring inspection.

9. Can a DIY enthusiast fix OBDII code P2476 GMC?

- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this code by following proper diagnostic procedures and using the necessary tools.

10. How often does OBDII code P2476 GMC occur in GMC vehicles?

- The occurrence of this code can vary, but it is not uncommon in GMC vehicles with EGT sensors in Bank 2 Sensor 4.

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