P0098 2015 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit High
Quick Answer
The P0098 diagnostic trouble code (DTC) for a 2015 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, reporting incorrect voltage readings to the ECM, Damaged Wiring or Connectors: The wiring or connectors in the sensor circuit may be damaged, leading to high voltage readings, ECM Issues: Problems with the engine control module can also cause the intake air temperature sensor to report a high voltage. 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 2015 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, reporting incorrect voltage readings to the ECM, Damaged Wiring or Connectors: The wiring or connectors in the sensor circuit may be damaged, leading to high voltage readings, ECM Issues: Problems with the engine control module can also cause the intake air temperature sensor to report a high voltage.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0098 2015 GMC Sierra Description
The P0098 diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to the Intake Air Temperature Sensor 2 Circuit High. This code indicates that the intake air temperature sensor 2 is reporting a higher than normal voltage to the engine control module (ECM). The intake air temperature sensor is a crucial component of the engine's air intake system, as it measures the temperature of the incoming air to help the ECM adjust the air/fuel mixture for optimal combustion. When the sensor reports a high voltage, it can lead to incorrect fuel mixture adjustments, potentially causing issues with engine performance, emissions, and fuel efficiency.
Common Causes of P0098 2015 GMC Sierra
- Faulty Intake Air Temperature Sensor: The sensor itself may be malfunctioning, reporting incorrect voltage readings to the ECM.
- Damaged Wiring or Connectors: The wiring or connectors in the sensor circuit may be damaged, leading to high voltage readings.
- ECM Issues: Problems with the engine control module can also cause the intake air temperature sensor to report a high voltage.
- Intake Air Leaks: Leaks in the intake system can affect the sensor's readings, triggering the P0098 code.
Symptoms of P0098 2015 GMC Sierra
- Check Engine Light: The most common symptom associated with the P0098 code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Engine Performance: The engine may experience a decrease in power and overall performance due to incorrect air/fuel mixture adjustments.
- Poor Fuel Efficiency: A faulty intake air temperature sensor can lead to inefficient combustion, resulting in decreased fuel efficiency.
- Rough Idle: The engine may idle roughly or inconsistently as a result of the incorrect air/fuel mixture.
How to Fix P0098 2015 GMC Sierra
- Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the intake air temperature sensor and its circuit.
- Replace the Intake Air Temperature Sensor: If the sensor is faulty, replace it with a new one to ensure accurate temperature readings.
- Check Wiring and Connectors: Inspect the wiring and connectors in the sensor circuit for any damage or corrosion, repairing or replacing as needed.
- Clear DTCs: After completing the repair, clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0098 2015 GMC Sierra
The typical repair costs for addressing the P0098 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the intake air temperature sensor and addressing any wiring or connector issues can range from $100 to $300 for parts and labor. It's important to note that diagnostic 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 overall repair costs. For a more accurate estimate, it's recommended to consult with local auto repair shops.
Tech Notes for P0098 2015 GMC Sierra
User Submitted Video
Need more information about the P0098 2015 GMC Sierra code?
Need more information on how to fix the P0098 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0098 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0098 2015 GMC Sierra Code
1. What does the P0098 code mean on a 2015 GMC Sierra?
The P0098 code indicates an issue with the Intake Air Temperature (IAT) Sensor 2, specifically that the circuit is reporting a voltage higher than normal.
2. What are the symptoms of the P0098 code in a GMC Sierra?
Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, difficulty starting, and a lit Check Engine Light.
3. What causes the P0098 code to appear?
Common causes include a faulty IAT sensor, damaged or corroded wiring, a loose or disconnected electrical connector, or a malfunctioning Engine Control Module (ECM).
4. Can I drive with the P0098 code on my GMC Sierra?
Driving with this code is possible, but it can lead to reduced performance and efficiency. Prolonged driving without addressing the issue may cause further damage to the engine or related components.
5. How do I fix the P0098 code on a 2015 GMC Sierra?
Repairs may involve replacing the IAT sensor, repairing or replacing damaged wiring, reconnecting loose connectors, or reprogramming the ECM if necessary.
6. Where is the IAT Sensor 2 located on a 2015 GMC Sierra?
The IAT Sensor 2 is typically located in the intake manifold or air intake tubing, downstream of the air filter.
7. How do I test the IAT Sensor 2 for the P0098 code?
You can test the IAT sensor using a multimeter to check its resistance and compare it to the manufacturer's specifications. Ensure the sensor operates correctly at various temperatures.
8. Is it expensive to repair the P0098 code on a GMC Sierra?
Repair costs vary depending on the issue. Replacing the IAT sensor generally costs between $50 and $150, while fixing wiring or ECM issues may cost more.
9. Can a dirty air filter trigger the P0098 code?
A dirty air filter is unlikely to directly trigger the P0098 code but can indirectly affect sensor readings. It’s good practice to check and replace the air filter if needed.
10. Does the P0098 code require ECM reprogramming?
ECM reprogramming is rarely necessary for this code unless the ECM itself is determined to be faulty after other potential issues are ruled out.
Discuss the causes and fixes for P0098 2015 GMC Sierra OBDII Code
Code P0098 2015 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.