AutoCodes – GMC – P2481 GMC

P2481 GMC Code - Exhaust Gas Temperature Sensor 5 Circuit Low 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) 5, Exhaust Gas Temperature Sensor 5 harness is open or shorted, Exhaust Gas Temperature 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: P2481 GMC indicates Exhaust Gas Temperature Sensor 5 Circuit Low Voltage.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 5, Exhaust Gas Temperature Sensor 5 harness is open or shorted, Exhaust Gas Temperature 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 2,282

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 P2481 GMC 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 less than 158 Ω for greater than 2 s.

OBDII Code P2481 GMC - Exhaust Gas Temperature Sensor 5 Circuit Low Voltage - AutoCodes.com — P2481 GMC Code - Exhaust Gas Temperature Sensor 5 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2481 GMC?

Faulty Exhaust Gas Temperature Sensor (EGTS) 5
Exhaust Gas Temperature Sensor 5 harness is open or shorted
Exhaust Gas Temperature Sensor 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2481 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 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 P2481 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 P2481 GMC code?

Need more information on how to fix the P2481 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2481 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P2481 2014 GMC Sierra — Exhaust Gas Temperature Sensor 5 Circuit Low Voltage
P2481 2015 GMC Sierra — Exhaust Gas Temperature Sensor 5 Circuit Low Voltage
P2481 2016 GMC Sierra — Exhaust Gas Temperature Sensor 5 Circuit Low Voltage
P2481 2017 GMC Sierra — Exhaust Gas Temperature Sensor 5 Circuit Low Voltage
P2481 2018 GMC Sierra — Exhaust Gas Temperature Sensor 5 Circuit Low Voltage

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 P2481 GMC Code

1. What are the common symptoms of OBDII code P2481 GMC (Exhaust Gas Temperature Sensor 5 Circuit Low Voltage)?

The common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What can cause the OBDII code P2481 GMC to trigger?

This code is typically triggered by a malfunction in the exhaust gas temperature sensor 5 circuit, which may be caused by wiring issues, a faulty sensor, or a problem with the engine control module.

3. How serious is OBDII code P2481 GMC?

While this code may not cause immediate harm to your vehicle, it can lead to decreased engine performance and fuel efficiency if left unresolved. It is recommended to address the issue promptly.

4. How can I diagnose the cause of OBDII code P2481 GMC?

Diagnosing this code usually involves checking the wiring and connections related to the exhaust gas temperature sensor 5, testing the sensor itself, and verifying the operation of the engine control module.

5. Can I drive my vehicle with OBDII code P2481 GMC active?

It is generally safe to drive your vehicle with this code, but it is advisable to address the underlying issue as soon as possible to prevent further complications.

6. How is OBDII code P2481 GMC typically repaired?

Repairing this code often involves repairing or replacing damaged wiring, replacing the faulty exhaust gas temperature sensor 5, or addressing any issues with the engine control module.

7. Is it possible to clear OBDII code P2481 GMC without fixing the underlying issue?

While clearing the code may temporarily turn off the Check Engine Light, it will not resolve the underlying problem causing the code to trigger. It is recommended to address the root cause of the issue.

8. Can a DIY enthusiast fix OBDII code P2481 GMC at home?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code at home by following repair guides and utilizing the necessary diagnostic equipment.

9. How much does it typically cost to repair OBDII code P2481 GMC at a professional mechanic?

The cost of repairing this code can vary depending on the cause of the issue, the labor rates in your area, and the specific parts that need to be replaced. It is recommended to obtain quotes from different mechanics.

10. How often does OBDII code P2481 GMC occur in GMC vehicles?

While the frequency of this code can vary, it has been reported in GMC vehicles with specific engine configurations that utilize exhaust gas temperature sensors. Regular maintenance and timely repairs can help prevent this code from occurring.