AutoCodes – Toyota – P0112 2005 Toyota Highlander

P0112 2005 Toyota Highlander Code - Intake Air Temperature Circuit Low Input

Quick Answer

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted. 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
P0112 2005 Toyota Highlander indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,086
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0112 2005 Toyota Highlander Description

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.
OBDII Code P0112 2005 Toyota Highlander - Intake Air Temperature Circuit Low Input - AutoCodes.com
P0112 2005 Toyota Highlander Code - Intake Air Temperature Circuit Low Input

What are the Possible Causes of the DTC P0112 2005 Toyota Highlander?

  • Faulty Intake Air Temperature (IAT) sensor
  • Dirty air filter
  • Intake Air Temperature (IAT) sensor harness is open or shorted
  • Intake Air Temperature (IAT) sensor circuit poor electrical connection

How to Fix the DTC P0112 2005 Toyota Highlander?

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 P0112 2005 Toyota Highlander 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 P0112 2005 Toyota Highlander code?

Need more information on how to fix the P0112 2005 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0112 2005 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

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 P0112 2005 Toyota Highlander Code

1. What are the common symptoms of OBDII code P0112 on a 2005 Toyota Highlander?

The common symptoms of OBDII code P0112 on a 2005 Toyota Highlander include poor engine performance, reduced fuel efficiency, and potential stalling of the vehicle.

2. What does the OBDII code P0112 "Intake Air Temperature Circuit Low Input" indicate?

The OBDII code P0112 in a 2005 Toyota Highlander indicates that the Engine Control Module (ECM) has detected a low input signal from the intake air temperature sensor.

3. What are the possible causes of OBDII code P0112 on a 2005 Toyota Highlander?

Possible causes of OBDII code P0112 on a 2005 Toyota Highlander include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or a problem with the ECM.

4. How can I diagnose the OBDII code P0112 on my 2005 Toyota Highlander?

To diagnose OBDII code P0112 on a 2005 Toyota Highlander, you can use a scan tool to retrieve the code and then test the intake air temperature sensor using a multimeter to check for proper resistance values.

5. What are some repair tips for fixing OBDII code P0112 on a 2005 Toyota Highlander?

Repair tips for fixing OBDII code P0112 on a 2005 Toyota Highlander include checking and replacing the intake air temperature sensor if faulty, repairing any damaged wiring or connectors in the sensor circuit, and resetting the ECM after repairs.

6. Can I continue driving my 2005 Toyota Highlander with OBDII code P0112?

It is not recommended to continue driving your 2005 Toyota Highlander with OBDII code P0112, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

7. How much does it cost to repair OBDII code P0112 on a 2005 Toyota Highlander?

The cost to repair OBDII code P0112 on a 2005 Toyota Highlander can vary depending on the root cause of the issue, but it may involve expenses for parts replacement and labor costs at a mechanic or dealership.

8. Is OBDII code P0112 a serious issue in a 2005 Toyota Highlander?

OBDII code P0112 in a 2005 Toyota Highlander should be addressed promptly to prevent potential engine performance issues and further damage. It is recommended to have the issue diagnosed and repaired as soon as possible.

9. Can a DIY enthusiast fix OBDII code P0112 on a 2005 Toyota Highlander?

A DIY enthusiast with the necessary tools and knowledge of automotive repair may be able to fix OBDII code P0112 on a 2005 Toyota Highlander by following repair guides and procedures. However, if unsure, it is best to consult a professional mechanic.

10. How long does it take to repair OBDII code P0112 on a 2005 Toyota Highlander?

The time it takes to repair OBDII code P0112 on a 2005 Toyota Highlander can vary based on the root cause of the issue and the complexity of the repair. It may take a few hours to a day for the repair to be completed.

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