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Engine-Codes – GMC – P2488 GMC

P2488 GMC Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5

Quick Answer

The P2488 diagnostic trouble code (DTC) for GMC vehicles refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit Range/Performance for Bank 2 Sensor 5. Common causes include Faulty Exhaust Gas Temperature (EGT) sensor, Damaged wiring or connectors in the sensor circuit, ECM software issues. 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
P2488 GMC indicates Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5.
Common causes
Common causes include Faulty Exhaust Gas Temperature (EGT) sensor, Damaged wiring or connectors in the sensor circuit, ECM software issues.
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 14, 2024
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Code P2488 GMC Description

The P2488 diagnostic trouble code (DTC) for GMC vehicles refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit Range/Performance for Bank 2 Sensor 5. This code indicates that the engine control module (ECM) has detected a problem with the exhaust gas temperature sensor in the specified bank and sensor location. The EGT sensor is responsible for monitoring the temperature of the exhaust gases leaving the engine, providing crucial data for the ECM to adjust fuel delivery and optimize engine performance.

OBDII Code P2488 GMC - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5
P2488 GMC Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5

Common Causes of P2488 GMC

  1. Faulty Exhaust Gas Temperature (EGT) sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM software issues
  4. Exhaust system leaks

Symptoms of P2488 GMC

  1. Decreased fuel efficiency
  2. Engine power loss
  3. Rough idling
  4. Hesitation during acceleration
  5. Stalling

How to Fix P2488 GMC

  1. Diagnose the specific cause of the issue by using a scan tool to retrieve the DTC and inspecting the EGT sensor, wiring, and connectors.
  2. Replace the faulty EGT sensor if it is determined to be the cause of the problem.
  3. Repair or replace any damaged wiring or connectors in the sensor circuit.
  4. Clear the DTC from the ECM memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the ECM or exhaust system components.

Cost to Fix P2488 GMC

The typical repair costs for addressing a P2488 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, replacing a faulty EGT sensor can cost between $150 and $300, including parts and labor. However, additional costs may be incurred if wiring repairs or ECM reprogramming are necessary. It is advisable to check with local auto repair shops for more accurate estimates based on the vehicle make and model, as well as the extent of the repairs needed. Keep in mind that labor rates can range from $80 to $150 per hour, with rates potentially higher in metropolitan areas or at dealerships.

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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 P2488 GMC Code

1. What are the common symptoms of OBDII code P2488 GMC?

The common symptoms of code P2488 GMC may include reduced engine performance, increased fuel consumption, and the illumination of the check engine light.

2. What does the OBDII code P2488 GMC indicate?

Code P2488 GMC indicates a problem with the Exhaust Gas Temperature Sensor Circuit Range/Performance for Bank 2 Sensor 5.

3. What are the possible causes of OBDII code P2488 GMC?

Possible causes of code P2488 GMC include a faulty exhaust gas temperature sensor, wiring issues, sensor connector problems, or an exhaust system leak.

4. How can I diagnose the issue causing OBDII code P2488 GMC?

Diagnosing the issue causing code P2488 GMC involves checking the exhaust gas temperature sensor, inspecting the wiring and connectors for damage, and performing a thorough inspection of the exhaust system.

5. How can I repair OBDII code P2488 GMC?

Repairing code P2488 GMC may involve replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring or connectors, and fixing any leaks in the exhaust system.

6. Can I continue driving with OBDII code P2488 GMC present?

It is not recommended to continue driving with code P2488 GMC present, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

7. Will resetting the check engine light resolve OBDII code P2488 GMC?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing code P2488 GMC. It is important to diagnose and repair the problem to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P2488 GMC?

The cost to repair code P2488 GMC can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

9. Is OBDII code P2488 GMC a serious issue?

Code P2488 GMC should be addressed promptly to prevent potential damage to the engine and ensure optimal vehicle performance. Ignoring the code can lead to more severe problems over time.

10. Can I troubleshoot and repair OBDII code P2488 GMC myself?

While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing code P2488 GMC may require specialized tools and expertise. It is recommended to seek assistance from a qualified mechanic for proper diagnosis and repair.

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