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Engine-Codes – Generic – P0098

P0098 Code - Intake Air Temperature Sensor 2 Circuit High

Quick Answer

The P0098 diagnostic trouble code (DTC) refers to the Intake Air Temperature Sensor 2 Circuit High. Common causes include Faulty intake air temperature sensor, Wiring or connector issues in the intake air temperature sensor circuit, Intake air temperature sensor located too close to a heat source, causing false high temperature readings. 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 sensor, Wiring or connector issues in the intake air temperature sensor circuit, Intake air temperature sensor located too close to a heat source, causing false high temperature readings.
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 06, 2024
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Code P0098 Description

The P0098 diagnostic trouble code (DTC) refers to the Intake Air Temperature Sensor 2 Circuit High. This means that the Engine Control Module (ECM) has detected a high voltage signal from the intake air temperature sensor, indicating that the temperature reading is above the normal range. The intake air temperature sensor is responsible for measuring the temperature of the incoming air into the engine. This information is crucial for the ECM to adjust fuel mixture and ignition timing for optimal engine performance and efficiency. When the sensor provides a high voltage signal, it can lead to incorrect fuel and ignition adjustments, resulting in poor engine performance, decreased fuel efficiency, and potential damage to the engine if not addressed promptly.

OBDII Code P0098 - Intake Air Temperature Sensor 2 Circuit High
P0098 Code - Intake Air Temperature Sensor 2 Circuit High

Common Causes of P0098

  1. Faulty intake air temperature sensor
  2. Wiring or connector issues in the intake air temperature sensor circuit
  3. Intake air temperature sensor located too close to a heat source, causing false high temperature readings
  4. ECM software or hardware issues

Symptoms of P0098

  1. Decreased fuel efficiency
  2. Engine running rough or misfiring
  3. Check Engine Light illuminated
  4. Reduced engine power
  5. Hard starting or stalling

How to Fix P0098

  1. Locate and inspect the intake air temperature sensor for any visible damage or signs of malfunction.
  2. Test the intake air temperature sensor using a multimeter to check for proper resistance values.
  3. Inspect the wiring and connectors associated with the intake air temperature sensor for any breaks, corrosion, or loose connections.
  4. Replace the intake air temperature sensor if it is found to be faulty or the wiring/connections are damaged.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0098

The cost to repair the Intake Air Temperature Sensor 2 Circuit High issue can vary depending on the make and model of the vehicle, as well as the location and specific labor rates of the auto repair shop. On average, the cost for parts could range from $50 to $150, with labor costs adding an additional $80 to $150. Therefore, the total repair cost could fall between $130 and $300. It is recommended to obtain quotes from multiple auto repair shops to find the best price for this repair.

What does this mean?

Tech Notes for P0098

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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Code P0098 Information for Specific Makes

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.

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