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P0098 2014 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The P0098 diagnostic trouble code (DTC) for a 2014 GMC Sierra refers to the Intake Air Temperature Sensor 2 Circuit High. Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to read a higher voltage than normal, Wiring Issues: Damaged or corroded wiring connected to the sensor can lead to a high voltage reading, Intake Air Leaks: Leaks in the intake system can cause the sensor to detect higher temperatures than actual, triggering the code. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0098 2014 GMC Sierra indicates Intake Air Temperature Sensor 2 Circuit High.
Common causes
Common causes include Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to read a higher voltage than normal, Wiring Issues: Damaged or corroded wiring connected to the sensor can lead to a high voltage reading, Intake Air Leaks: Leaks in the intake system can cause the sensor to detect higher temperatures than actual, triggering the code.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0098 2014 GMC Sierra Description

The P0098 diagnostic trouble code (DTC) for a 2014 GMC Sierra refers to the Intake Air Temperature Sensor 2 Circuit High. This code indicates that the intake air temperature sensor 2 is reading a higher than normal voltage, which could be caused by a variety of issues. The intake air temperature sensor is a crucial component of the vehicle's engine management system, as it helps the engine control module (ECM) determine the optimal air-fuel mixture for combustion. When the sensor detects a high voltage, it can lead to incorrect fuel delivery, timing, and other parameters, resulting in poor engine performance, decreased fuel efficiency, and potential damage to the engine over time.

OBDII Code P0098 2014 GMC Sierra - Intake Air Temperature Sensor 2 Circuit High
P0098 2014 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit High

Common Causes of P0098 2014 GMC Sierra

  1. Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to read a higher voltage than normal.
  2. Wiring Issues: Damaged or corroded wiring connected to the sensor can lead to a high voltage reading.
  3. Intake Air Leaks: Leaks in the intake system can cause the sensor to detect higher temperatures than actual, triggering the code.
  4. ECM Malfunction: A malfunctioning engine control module can also cause incorrect sensor readings, leading to the P0098 code.
  5. Environmental Factors: Extreme temperatures or exposure to moisture can also affect the sensor's performance and trigger the code.

Symptoms of P0098 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. Reduced Fuel Efficiency: A faulty intake air temperature sensor can cause the engine to run rich or lean, leading to decreased fuel efficiency.
  3. Rough Idling: The engine may experience rough idling or stalling due to incorrect air-fuel mixture.
  4. Engine Misfires: Incorrect sensor readings can result in engine misfires, which can lead to poor performance and potential damage.
  5. Reduced Power: The vehicle may experience a loss of power or acceleration due to the incorrect air-fuel mixture caused by the faulty sensor.

How to Fix P0098 2014 GMC Sierra

  1. Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the intake air temperature sensor and related components.
  2. Replace the Intake Air Temperature Sensor: If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  3. Check Wiring: Inspect the wiring harness for any damage or corrosion, and repair or replace as necessary.
  4. Address Intake Air Leaks: Check for any leaks in the intake system and repair them to ensure accurate sensor readings.
  5. Reset the ECM: Clear the DTC and reset the ECM to see if the issue has been resolved.

Cost to Fix P0098 2014 GMC Sierra

The typical repair costs for addressing the P0098 code on a 2014 GMC Sierra can range from $100 to $300, depending on the cost of the intake air temperature sensor and any additional parts or labor required. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. It's recommended to consult with a trusted mechanic or dealership to get a more accurate estimate based on your specific situation.

What does this mean?

Tech Notes for P0098 2014 GMC Sierra

The Intake Air Temperature (IAT) sensor 1, IAT sensor 2, Humidity sensor, MAF sensor, and BARO pressure sensor are integrated within the Mass Air Flow / Multifunction Intake Air Sensor.











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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 P0098 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P0098 in a 2014 GMC Sierra?

The common symptoms of code P0098 include poor engine performance, rough idling, decreased fuel efficiency, and in some cases, the Check Engine light may illuminate.

2. What does OBDII code P0098 indicate for a 2014 GMC Sierra?

Code P0098 indicates a high voltage condition in the Intake Air Temperature Sensor 2 circuit of the vehicle.

3. What are the possible causes of OBDII code P0098 in a 2014 GMC Sierra?

Common causes of code P0098 include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the Intake Air Temperature Sensor 2 circuit high issue in my 2014 GMC Sierra?

To diagnose the issue, you can use a multimeter to test the resistance of the intake air temperature sensor, visually inspect the sensor and its wiring for any damage, and perform a scan tool test to monitor sensor readings.

5. Can I still drive my 2014 GMC Sierra with OBDII code P0098?

It's not recommended to drive your vehicle with code P0098 as it can lead to poor engine performance and potential damage. It's best to address the issue promptly.

6. How can I repair OBDII code P0098 in my 2014 GMC Sierra?

Repairing code P0098 typically involves replacing the faulty intake air temperature sensor, repairing any damaged wiring or connectors, and clearing the trouble code with a scan tool.

7. Will resetting the Check Engine light fix OBDII code P0098 in my 2014 GMC Sierra?

Simply resetting the Check Engine light without addressing the underlying issue will not fix code P0098. It's important to diagnose and repair the root cause of the problem.

8. Is it easy to replace the Intake Air Temperature Sensor 2 in a 2014 GMC Sierra?

Replacing the intake air temperature sensor in a 2014 GMC Sierra is usually a straightforward process that can be done with basic tools. However, it's recommended to consult a professional mechanic if you're not familiar with the procedure.

9. Are there any preventive measures to avoid OBDII code P0098 in a 2014 GMC Sierra?

Regular maintenance, such as checking and cleaning the intake air temperature sensor, inspecting wiring for damage, and addressing any engine performance issues promptly, can help prevent code P0098 from occurring.

10. How much does it cost to repair OBDII code P0098 in a 2014 GMC Sierra?

The cost of repairing code P0098 can vary depending on the root cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.

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