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P2482 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 5 Circuit High Voltage

Quick Answer

The P2482 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Exhaust Gas Temperature Sensor 5 Circuit High Voltage. Common causes include Faulty Sensor: The exhaust gas temperature sensor 5 may be faulty or damaged, leading to incorrect temperature readings, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connecting the sensor to the ECM can cause high voltage readings, ECM Malfunction: A malfunction in the engine control module can also trigger this code by misinterpreting sensor data. 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
P2482 2014 GMC Sierra indicates Exhaust Gas Temperature Sensor 5 Circuit High Voltage.
Common causes
Common causes include Faulty Sensor: The exhaust gas temperature sensor 5 may be faulty or damaged, leading to incorrect temperature readings, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connecting the sensor to the ECM can cause high voltage readings, ECM Malfunction: A malfunction in the engine control module can also trigger this code by misinterpreting sensor data.
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 10, 2024
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Code P2482 2014 GMC Sierra Description

The P2482 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Exhaust Gas Temperature Sensor 5 Circuit High Voltage. This code indicates that there is an issue with the exhaust gas temperature sensor 5 in the vehicle's exhaust system. The exhaust gas temperature sensor is responsible for measuring the temperature of the exhaust gases and providing this data to the engine control module (ECM) for optimal performance and emission control.

OBDII Code P2482 2014 GMC Sierra - Exhaust Gas Temperature Sensor 5 Circuit High Voltage
P2482 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 5 Circuit High Voltage

Common Causes of P2482 2014 GMC Sierra

  1. Faulty Sensor: The exhaust gas temperature sensor 5 may be faulty or damaged, leading to incorrect temperature readings.
  2. Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connecting the sensor to the ECM can cause high voltage readings.
  3. ECM Malfunction: A malfunction in the engine control module can also trigger this code by misinterpreting sensor data.
  4. Exhaust System Leak: A leak in the exhaust system near the sensor can lead to false readings and trigger the code.
  5. Exhaust Gas Temperature Sensor Placement: Improper placement of the sensor or physical damage to the sensor can cause high voltage readings.

Symptoms of P2482 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 decreased fuel efficiency due to inaccurate temperature readings.
  3. Rough Idle: The engine may experience rough idling or hesitation when the sensor is not functioning correctly.
  4. Emission Control Issues: The vehicle may fail emissions tests or emit higher levels of pollutants due to inaccurate sensor readings.
  5. Reduced Engine Performance: The engine may lack power and responsiveness when the sensor is not providing accurate temperature data.

How to Fix P2482 2014 GMC Sierra

  1. Diagnose the Issue: Use a diagnostic scanner to read the code and identify the specific cause of the high voltage condition in the exhaust gas temperature sensor 5 circuit.
  2. Inspect Sensor and Wiring: Check the exhaust gas temperature sensor 5 for any visible damage or corrosion. Inspect the wiring harness for any issues such as frayed wires or loose connections.
  3. Replace Sensor: If the sensor is faulty, replace it with a new one following the manufacturer's specifications.
  4. Repair Wiring: Repair or replace any damaged wiring in the sensor circuit to ensure proper connectivity.
  5. Clear Codes: After the repair is completed, clear the diagnostic trouble codes from the ECM using a scan tool to reset the check engine light.

Cost to Fix P2482 2014 GMC Sierra

The cost of repairing the Exhaust Gas Temperature Sensor 5 Circuit High Voltage issue on a 2014 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. Generally, the cost of a new exhaust gas temperature sensor can range from $50 to $200, depending on the brand and quality. Labor costs for this repair can typically range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair.

What does this mean?

Tech Notes for P2482 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 P2482 2014 GMC Sierra Code

1. What does OBDII code P2482 mean for a 2014 GMC Sierra?

P2482 indicates a high voltage issue in the Exhaust Gas Temperature (EGT) Sensor 5 circuit, which monitors exhaust temperatures to optimize emissions and prevent damage to components.

2. What are the symptoms of code P2482 in a 2014 GMC Sierra?

Common symptoms include a Check Engine Light, reduced engine performance, higher emissions, possible DPF regeneration issues, and poor fuel efficiency.

3. What causes code P2482 to appear in a 2014 GMC Sierra?

Potential causes include a faulty EGT sensor 5, damaged wiring or connectors in the sensor circuit, corrosion, or a malfunctioning Engine Control Module (ECM).

4. Can I drive my 2014 GMC Sierra with code P2482?

While it may still be drivable, continuing to drive with this code can result in further emissions system damage or poor engine performance. Prompt diagnosis and repair are recommended.

5. How do I diagnose code P2482 on a 2014 GMC Sierra?

Start by inspecting the EGT sensor 5 and its wiring for damage, corrosion, or loose connections. Use a multimeter to check the sensor's voltage and continuity. A scan tool can help confirm sensor readings.

6. How can I fix code P2482 on my 2014 GMC Sierra?

Repairs may include replacing the faulty EGT sensor 5, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or reprogramming/updating the ECM.

7. Where is Exhaust Gas Temperature Sensor 5 located on a 2014 GMC Sierra?

EGT sensor 5 is typically located downstream in the exhaust system, often near or after the diesel particulate filter (DPF).

8. How much does it cost to repair code P2482 on a 2014 GMC Sierra?

The cost can vary but generally ranges between $150 and $400, depending on parts replacement, labor costs, and diagnostic fees.

9. Can a bad EGT sensor cause long-term damage to my 2014 GMC Sierra?

Yes, a faulty EGT sensor can lead to excessive exhaust temperatures, which may damage the DPF, turbocharger, or other exhaust components over time.

10. How can I prevent code P2482 from occurring in my 2014 GMC Sierra?

Regular maintenance, inspecting exhaust components for wear or damage, and addressing exhaust-related issues promptly can help prevent this code.

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