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Engine-Codes – GMC – P2487 GMC

P2487 GMC Code - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5

Quick Answer

The P2487 GMC code indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit on Bank 2 Sensor 5 of the vehicle. Common causes include Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor itself, which may need to be replaced, Wiring Issues: Any damage or corrosion in the wiring harness connected to the EGT sensor can cause circuit high readings, ECM Malfunction: A problem with the engine control module (ECM) can also trigger this code by sending incorrect signals to the EGT sensor. 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
P2487 GMC indicates Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5.
Common causes
Common causes include Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor itself, which may need to be replaced, Wiring Issues: Any damage or corrosion in the wiring harness connected to the EGT sensor can cause circuit high readings, ECM Malfunction: A problem with the engine control module (ECM) can also trigger this code by sending incorrect signals to the EGT sensor.
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 09, 2024
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Code P2487 GMC Description

The P2487 GMC code indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit on Bank 2 Sensor 5 of the vehicle. This sensor is responsible for monitoring the exhaust gas temperature in the exhaust system. The EGT sensor helps the engine control module (ECM) adjust fuel injection and timing to optimize engine performance and reduce emissions. When the EGT sensor circuit is reporting a high voltage or resistance, it means that the exhaust gas temperature is higher than expected, which can lead to various issues in the vehicle.

OBDII Code P2487 GMC - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5
P2487 GMC Code - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5

Common Causes of P2487 GMC

  1. Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor itself, which may need to be replaced.
  2. Wiring Issues: Any damage or corrosion in the wiring harness connected to the EGT sensor can cause circuit high readings.
  3. ECM Malfunction: A problem with the engine control module (ECM) can also trigger this code by sending incorrect signals to the EGT sensor.
  4. Exhaust System Leak: A leak in the exhaust system can lead to higher exhaust gas temperatures, triggering the EGT sensor circuit high code.

Symptoms of P2487 GMC

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Power: The vehicle may experience a decrease in power or acceleration due to the incorrect fuel injection and timing adjustments.
  3. Poor Fuel Economy: High exhaust gas temperature can lead to poor fuel efficiency as the engine struggles to operate efficiently.
  4. Rough Idle: The engine may idle rough or unevenly due to the incorrect fuel mixture caused by the faulty EGT sensor circuit.

How to Fix P2487 GMC

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the code and pinpoint the exact location of the problem in the EGT sensor circuit.
  2. Check Wiring: Inspect the wiring harness connected to the EGT sensor for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Replace EGT Sensor: If the sensor itself is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Clear Codes: After completing the repair, clear the code from the ECM memory using the diagnostic scanner to reset the check engine light.
  5. Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light remains off.

Cost to Fix P2487 GMC

The typical cost to repair a P2487 GMC code related to the Exhaust Gas Temperature Sensor Circuit High on Bank 2 Sensor 5 can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge lower prices for repairs.

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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 P2487 GMC Code

1. What are the common symptoms of OBDII code P2487 GMC?

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

2. What can cause the OBDII code P2487 GMC to trigger?

- The code can be triggered by a faulty exhaust gas temperature sensor, wiring issues, or a malfunction in the sensor circuit.

3. How serious is the OBDII code P2487 GMC?

- While the code may not cause immediate harm to the vehicle, it can lead to reduced engine efficiency and potential damage if left unresolved.

4. How can I diagnose the OBDII code P2487 GMC?

- Diagnosis typically involves using a scan tool to read the code, checking the exhaust gas temperature sensor and its connections, and testing the sensor's resistance.

5. Can I continue driving with the OBDII code P2487 GMC present?

- It is not recommended to continue driving with the code present, as it can lead to further issues and potential damage to the vehicle over time.

6. How can I repair the OBDII code P2487 GMC?

- Repair may involve replacing the exhaust gas temperature sensor, repairing or replacing damaged wiring, or addressing any issues in the sensor circuit.

7. Are there any DIY tips for fixing the OBDII code P2487 GMC?

- DIY tips may include checking and cleaning the sensor connections, inspecting the wiring for damage, and ensuring proper installation of a new sensor if needed.

8. Will resetting the check engine light resolve the OBDII code P2487 GMC?

- Resetting the check engine light may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it typically cost to repair the OBDII code P2487 GMC?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.

10. Can a mechanic help me fix the OBDII code P2487 GMC?

- Yes, a qualified mechanic can diagnose and repair the issue causing the code, ensuring proper resolution and preventing further complications.

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