AutoCodesChevrolet – P0098 2018 Chevrolet Silverado

P0098 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.
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Code Popularity 491
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 16, 2022
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Code P0098 2018 Chevrolet Silverado Description

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. The signal varies with inlet air temperature in the sensor bore and is displayed by the scan tool as °C (°F). The IAT sensor 2 and the humidity sensor share the same circuit. The IAT sensor 2 signal is displayed by the scan tool as Hertz (Hz) and °C (°F). The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the IAT sensor 2 signal is greater than 390 Hz, warmer than 150°C (302°F), for greater than 5 s.
OBDII Code P0098 2018 Chevrolet Silverado - Intake Air Temperature Sensor 2 Circuit High - AutoCodes.com
P0098 2018 Chevrolet Silverado Code - Intake Air Temperature Sensor 2 Circuit High

What are the Possible Causes of the DTC P0098 2018 Chevrolet Silverado?

  • 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 2018 Chevrolet Silverado?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0098 2018 Chevrolet Silverado 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.

Need more information about the P0098 2018 Chevrolet Silverado code?

Need more information on how to fix the P0098 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0098 in a 2018 Chevrolet Silverado?

- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0098 for Intake Air Temperature Sensor 2 Circuit High mean in a 2018 Silverado?

- This code indicates that the intake air temperature sensor 2 circuit is registering a high voltage, possibly due to a wiring issue or sensor malfunction.

3. What are the possible causes of OBDII code P0098 in a 2018 Chevrolet Silverado?

- Causes can include a faulty intake air temperature sensor, damaged wiring or connectors, a defective engine control module (ECM), or issues with the sensor's ground connection.

4. How can I diagnose the Intake Air Temperature Sensor 2 Circuit High issue in my 2018 Silverado?

- Diagnose by checking the sensor's wiring and connector for damage, testing the sensor's resistance, and using a multimeter to measure voltage at the sensor.

5. Can I drive my 2018 Chevrolet Silverado with OBDII code P0098 active?

- It is not recommended to drive with this code active, as it can lead to poor engine performance and potentially cause further damage to the vehicle.

6. How do I repair OBDII code P0098 on my 2018 Silverado?

- Repair options include replacing the faulty intake air temperature sensor, repairing damaged wiring or connectors, and resetting the fault codes using an OBDII scanner.

7. Will clearing the OBDII code P0098 on my 2018 Silverado fix the issue?

- Clearing the code may temporarily turn off the check engine light, but if the underlying problem persists, the code is likely to reappear. It's essential to address the root cause of the issue.

8. Can a DIY enthusiast fix OBDII code P0098 in a 2018 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this issue, especially if it involves sensor replacement or basic wiring repairs.

9. How much does it typically cost to repair OBDII code P0098 in a 2018 Silverado at a dealership?

- Repair costs can vary but may include the price of a new intake air temperature sensor, labor charges for diagnosis and replacement, and any additional parts needed, potentially totaling a few hundred dollars.

10. Are there any preventive maintenance tips to avoid OBDII code P0098 in a 2018 Chevrolet Silverado?

- Regularly inspecting and maintaining the intake air temperature sensor, checking wiring connections, and addressing any engine performance issues promptly can help prevent this code from appearing.

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