P0098 2015 GMC Sierra Code - Intake Air Temperature Sensor 2 Circuit High
Quick Answer
The Intake Air Temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the Engine Control Module (ECM) supplied 5 V signal circuit. Common causes include Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature sensor harness is open or shorted, Intake Air Temperature sensor circuit poor electrical connection. 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 (IAT) sensor, Intake Air Temperature sensor harness is open or shorted, Intake Air Temperature sensor circuit poor electrical connection.
- 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.
Code P0098 2015 GMC Sierra Description
What are the Possible Causes of the DTC P0098 2015 GMC Sierra?
- Faulty Intake Air Temperature (IAT) sensor
- Intake Air Temperature sensor harness is open or shorted
- Intake Air Temperature sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0098 2015 GMC Sierra?
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.
Code Tech Notes
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0098 2015 GMC Sierra 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.
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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.
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