AutoCodes – Toyota – P0112 2007 Toyota Highlander

P0112 2007 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 2007 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.

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Code Popularity 3,126

How popular is this code, among other codes? Low

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0112 2007 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 2007 Toyota Highlander - Intake Air Temperature Circuit Low Input - AutoCodes.com — P0112 2007 Toyota Highlander Code - Intake Air Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2007 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 2007 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.

What does this mean?

Code Tech Notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 2007 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 2007 Toyota Highlander code?

Need more information on how to fix the P0112 2007 Toyota Highlander 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 P0112 2007 Toyota Highlander Code

1. What are the common symptoms of OBDII code P0112 in a 2007 Toyota Highlander?

The common symptoms of code P0112 in a 2007 Toyota Highlander may include poor fuel economy, rough idling, engine stalling, and a lack of power.

2. What does the OBDII code P0112 on a 2007 Toyota Highlander indicate?

The OBDII code P0112 on a 2007 Toyota Highlander indicates an issue with the Intake Air Temperature (IAT) sensor circuit registering a low input.

3. What are the possible causes of OBDII code P0112 in a 2007 Toyota Highlander?

Possible causes of code P0112 in a 2007 Toyota Highlander include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P0112 on my 2007 Toyota Highlander?

To diagnose code P0112 on a 2007 Toyota Highlander, you can start by visually inspecting the IAT sensor and its wiring for any visible damage. Using a multimeter, you can test the sensor's resistance and voltage to determine if it is functioning correctly.

5. Can I drive my 2007 Toyota Highlander with OBDII code P0112?

It is not recommended to drive your 2007 Toyota Highlander with OBDII code P0112 as it can lead to poor engine performance and potential damage if left unresolved.

6. How can I repair OBDII code P0112 on a 2007 Toyota Highlander?

Repairing OBDII code P0112 on a 2007 Toyota Highlander typically involves replacing the faulty IAT sensor, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.

7. Can a dirty air filter cause OBDII code P0112 in a 2007 Toyota Highlander?

While a dirty air filter can affect engine performance, it is not a direct cause of OBDII code P0112 in a 2007 Toyota Highlander. The code is specifically related to the Intake Air Temperature sensor circuit.

8. How important is it to address OBDII code P0112 in a 2007 Toyota Highlander promptly?

It is important to address OBDII code P0112 in a 2007 Toyota Highlander promptly to prevent potential engine damage, poor fuel efficiency, and drivability issues.

9. Will resetting the OBDII code P0112 in a 2007 Toyota Highlander fix the issue?

Resetting the OBDII code P0112 in a 2007 Toyota Highlander may temporarily clear the warning light, but if the underlying issue (such as a faulty IAT sensor) is not addressed, the code is likely to reappear.

10. Can a DIY enthusiast repair OBDII code P0112 in a 2007 Toyota Highlander?

A DIY enthusiast with the necessary tools and knowledge can potentially repair OBDII code P0112 in a 2007 Toyota Highlander by following proper diagnostic procedures and replacing the faulty components.