AutoCodes – GMC – P2488 GMC

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

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 5, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 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
P2488 GMC indicates Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 5, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 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 1,160
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 P2488 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 P2488 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P2488 GMC - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5 - AutoCodes.com
P2488 GMC Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5

What are the Possible Causes of the DTC P2488 GMC?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 5
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 5 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How to Fix the DTC P2488 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 P2488 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 P2488 GMC code?

Need more information on how to fix the P2488 GMC code? Get Access to Factory Service Manuals

Need Help with the 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 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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