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P2481 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 5 Circuit Low Voltage

Quick Answer

The P2481 diagnostic trouble code (DTC) for a 2014 GMC Sierra specifically refers to the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage. Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning exhaust gas temperature sensor, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connected to the sensor can also trigger this code, ECM Malfunction: A problem with the engine control module (ECM) that processes the sensor's data could lead to a low voltage reading. 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 2014 GMC Sierra indicates Exhaust Gas Temperature Sensor 5 Circuit Low Voltage.
Common causes
Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning exhaust gas temperature sensor, Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connected to the sensor can also trigger this code, ECM Malfunction: A problem with the engine control module (ECM) that processes the sensor's data could lead to a low voltage reading.
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 26, 2024
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Code P2481 2014 GMC Sierra Description

The P2481 diagnostic trouble code (DTC) for a 2014 GMC Sierra specifically refers to the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage. This code indicates that the exhaust gas temperature sensor, which is responsible for monitoring the temperature of the exhaust gases leaving the engine, is reporting a voltage signal that is lower than the expected range. This sensor plays a crucial role in ensuring the engine operates efficiently and within safe temperature limits.

OBDII Code P2481 2014 GMC Sierra - Exhaust Gas Temperature Sensor 5 Circuit Low Voltage
P2481 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 5 Circuit Low Voltage

Common Causes of P2481 2014 GMC Sierra

  1. Faulty Sensor: The most common cause of this code is a malfunctioning exhaust gas temperature sensor.
  2. Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connected to the sensor can also trigger this code.
  3. ECM Malfunction: A problem with the engine control module (ECM) that processes the sensor's data could lead to a low voltage reading.
  4. Exhaust System Leak: A leak in the exhaust system near the sensor can affect its ability to accurately measure exhaust gas temperature.
  5. Sensor Placement: If the sensor is incorrectly placed or installed, it may not provide accurate readings, triggering the code.

Symptoms of P2481 2014 GMC Sierra

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning exhaust gas temperature sensor can lead to improper fuel delivery, resulting in decreased fuel efficiency.
  3. Rough Idling: The engine may experience rough idling or hesitation when the sensor is not functioning correctly.
  4. Poor Performance: The vehicle may exhibit reduced performance, such as sluggish acceleration or lack of power.
  5. Increased Emissions: A faulty exhaust gas temperature sensor can cause the vehicle to produce higher emissions than normal.

How to Fix P2481 2014 GMC Sierra

  1. Diagnostic Testing: Begin by using a diagnostic scanner to retrieve the specific trouble code and verify the issue with the exhaust gas temperature sensor.
  2. Sensor Replacement: If the sensor is confirmed to be faulty, it will need to be replaced with a new, OEM-quality sensor.
  3. Wiring Inspection: Check the wiring harness connected to the sensor for any signs of damage, corrosion, or poor connections. Repair or replace as needed.
  4. ECM Check: Verify the functionality of the engine control module to ensure it is accurately processing the sensor's data.
  5. Clear Codes: After completing the repair process, clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2481 2014 GMC Sierra

The cost estimate for resolving the P2481 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the price range for this repair can be between $200 and $500, including parts and labor. Keep in mind that labor rates at auto repair shops can vary widely, with hourly rates typically ranging from $80 to $150. It's recommended to contact local auto repair shops for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P2481 2014 GMC Sierra

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.

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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 P2481 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2481 in a 2014 GMC Sierra related to the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage?

The common symptoms include poor engine performance, reduced fuel efficiency, and in some cases, the vehicle may go into a reduced power or limp mode.

2. What are the potential causes of OBDII code P2481 in a 2014 GMC Sierra?

Possible causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors in the sensor circuit, software issues, or a problem with the engine control module (ECM).

3. How can I diagnose the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage issue in my 2014 GMC Sierra?

You can diagnose this issue by using an OBDII scanner to read the fault code, checking the sensor's wiring and connectors for damage, and testing the sensor's resistance to determine if it is functioning correctly.

4. Can I still drive my 2014 GMC Sierra with OBDII code P2481 active?

It is not recommended to drive the vehicle with this fault code active, as it can lead to further damage to the engine or emissions system. It's best to address the issue promptly.

5. What are some repair tips for fixing OBDII code P2481 in a 2014 GMC Sierra?

Repair tips include inspecting and repairing any damaged wiring or connectors in the sensor circuit, replacing the exhaust gas temperature sensor if faulty, and clearing the fault code with an OBDII scanner.

6. How much does it cost to repair OBDII code P2481 related to the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage in a 2014 GMC Sierra?

The cost of repair can vary depending on the exact cause of the issue. It can range from a simple sensor replacement to more complex wiring repairs, so it's best to consult a mechanic for an accurate estimate.

7. Can a DIY enthusiast fix OBDII code P2481 on a 2014 GMC Sierra themselves?

While some enthusiasts may have the skills to diagnose and repair this issue, it is recommended to have a professional mechanic address it due to the complexity of the sensor circuit and potential ECM involvement.

8. How often does the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage issue occur in a 2014 GMC Sierra?

This issue is relatively uncommon, but it can occur due to sensor malfunctions, wiring problems, or ECM issues. Regular vehicle maintenance and inspections can help prevent such problems.

9. Will resetting the OBDII code P2481 in my 2014 GMC Sierra make the issue go away?

Resetting the code may temporarily clear the warning light, but if the underlying problem causing the fault code is not addressed, it is likely to reoccur. It's important to diagnose and fix the root cause of the issue.

10. Is OBDII code P2481 related to the Exhaust Gas Temperature Sensor 5 Circuit Low Voltage a serious problem in a 2014 GMC Sierra?

While it may not cause immediate harm to the vehicle, ignoring this fault code can lead to decreased performance and potential damage to the engine or emissions system over time. It's best to address it promptly.

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