AutoCodes – Generic – P0098

P0098 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 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 52,416

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 16, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0098 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 - Intake Air Temperature Sensor 2 Circuit High - AutoCodes.com — P0098 Code - Intake Air Temperature Sensor 2 Circuit High

What does this mean?

What are the Possible Causes of the DTC P0098?

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?

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.

What does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0098 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 code?

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

Need Help with the Code?

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Information for Specific Makes

P0098 Acura — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Audi — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Buick — Intake Air Temperature Sensor 2 Circuit High
P0098 Cadillac — Intake Air Temperature Sensor 2 Circuit High
P0098 Chevrolet — Intake Air Temperature Sensor 2 Circuit High
P0098 Ford — Intake Air Temperature Sensor 2 Circuit High Voltage Bank 1
P0098 GMC — Intake Air Temperature Sensor 2 Circuit High
P0098 Honda — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Lexus — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Lincoln — Intake Air Temperature Sensor 2 Circuit High Voltage Bank 1
P0098 Mazda — Boost Air Temperature Sensor Circuit High
P0098 Mitsubishi — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Toyota — Intake Air Temperature Sensor 2 Circuit High Voltage
P0098 Volkswagen — Intake Air Temperature Sensor 2 Circuit High Voltage

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 Code

1. What are the common symptoms of OBDII code P0098 (Intake Air Temperature Sensor 2 Circuit High)?

- Common symptoms include poor engine performance, reduced fuel efficiency, and potential stalling or rough idling.

2. What are the possible causes of OBDII code P0098?

- The code P0098 can be caused by a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the engine control module (ECM).

3. How can I diagnose the OBDII code P0098?

- Diagnosis typically involves using a scan tool to read the code, checking the intake air temperature sensor and its wiring for damage, and testing the sensor's resistance.

4. Can a dirty air filter trigger the OBDII code P0098?

- Yes, a dirty air filter can affect the intake air temperature readings and potentially trigger the code P0098.

5. What are some repair tips for fixing OBDII code P0098?

- Repair tips may include replacing the intake air temperature sensor, repairing damaged wiring or connectors, and ensuring proper air filter maintenance.

6. Is it safe to continue driving with the OBDII code P0098 present?

- It is generally not recommended to drive with the code P0098 present as it can lead to further engine issues and reduced performance.

7. Can extreme weather conditions cause the OBDII code P0098 to appear?

- Yes, extreme hot or cold weather conditions can sometimes affect the intake air temperature sensor readings and trigger the code P0098.

8. How much does it typically cost to repair OBDII code P0098?

- The cost of repair can vary depending on the exact cause of the code, but it may range from $100 to $300 for parts and labor.

9. Can resetting the OBDII system clear the P0098 code temporarily?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not resolved, the code is likely to reappear.

10. Is it possible to prevent OBDII code P0098 from occurring in the future?

- Regular maintenance, including checking and replacing the intake air temperature sensor as needed, can help prevent the recurrence of the P0098 code.