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Engine-Codes – Toyota – P0112 2018 Toyota RAV4

P0112 2018 Toyota RAV4 Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2018 Toyota RAV4 indicates that there is a low input signal from the Intake Air Temperature (IAT) sensor circuit. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or contamination in the sensor circuit. 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 2018 Toyota RAV4 indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or contamination in the sensor circuit.
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 17, 2024
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Code P0112 2018 Toyota RAV4 Description

The P0112 diagnostic trouble code (DTC) for a 2018 Toyota RAV4 indicates that there is a low input signal from the Intake Air Temperature (IAT) sensor circuit. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for the engine control unit (ECU) to adjust the air-fuel mixture for optimal combustion. When the ECU receives a low input signal from the IAT sensor, it may not be able to accurately adjust the air-fuel mixture, leading to potential performance issues.

OBDII Code P0112 2018 Toyota RAV4 - Intake Air Temperature Circuit Low Input
P0112 2018 Toyota RAV4 Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2018 Toyota RAV4

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Damaged wiring or connectors in the IAT sensor circuit
  3. Corrosion or contamination in the sensor circuit
  4. Issues with the Engine Control Unit (ECU)
  5. Intake air leaks near the sensor

Symptoms of P0112 2018 Toyota RAV4

  1. Rough idling
  2. Poor acceleration
  3. Decreased fuel efficiency
  4. Stalling
  5. Check engine light illuminated

How to Fix P0112 2018 Toyota RAV4

  1. Begin by locating the IAT sensor in the intake air duct or manifold.
  2. Inspect the wiring and connectors for any damage, corrosion, or contamination.
  3. Test the IAT sensor using a multimeter to check for proper resistance and voltage readings.
  4. Replace the IAT sensor if it is found to be faulty.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the code does not reappear.

Cost to Fix P0112 2018 Toyota RAV4

The typical repair costs for addressing a P0112 code on a 2018 Toyota RAV4 can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P0112 in a 2018 Toyota RAV4?

The common symptoms of OBDII code P0112 in a 2018 Toyota RAV4 include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P0112 "Intake Air Temperature Circuit Low Input" mean in a 2018 Toyota RAV4?

The OBDII code P0112 in a 2018 Toyota RAV4 indicates that the engine control module (ECM) has detected a low input signal from the intake air temperature (IAT) sensor.

3. What are the possible causes of OBDII code P0112 in a 2018 Toyota RAV4?

Possible causes of OBDII code P0112 in a 2018 Toyota RAV4 include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or issues with the ECM.

4. How can I diagnose the OBDII code P0112 in my 2018 Toyota RAV4?

To diagnose the OBDII code P0112 in a 2018 Toyota RAV4, you can use a scan tool to read the code, test the IAT sensor for proper resistance values, and inspect the wiring and connectors for any signs of damage.

5. Can I drive my 2018 Toyota RAV4 with the OBDII code P0112 present?

It is not recommended to drive your 2018 Toyota RAV4 with the OBDII code P0112 present, as it can lead to further engine issues and potentially affect the vehicle's performance.

6. How do I repair OBDII code P0112 in my 2018 Toyota RAV4?

To repair OBDII code P0112 in a 2018 Toyota RAV4, you may need to replace the faulty IAT sensor, repair any damaged wiring or connectors, or reset the ECM to clear the code.

7. Is it possible to reset OBDII code P0112 in a 2018 Toyota RAV4 without making any repairs?

While you can reset the OBDII code P0112 in a 2018 Toyota RAV4 using a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to fix OBDII code P0112 in a 2018 Toyota RAV4?

The cost of fixing OBDII code P0112 in a 2018 Toyota RAV4 can vary depending on the specific repair needed, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast easily fix OBDII code P0112 in a 2018 Toyota RAV4?

If you have experience working on vehicles, you may be able to fix OBDII code P0112 in a 2018 Toyota RAV4 yourself by following repair guides or tutorials specific to your vehicle model.

10. Will OBDII code P0112 cause my 2018 Toyota RAV4 to fail an emissions test?

Yes, OBDII code P0112 in a 2018 Toyota RAV4 can cause the vehicle to fail an emissions test due to the impact on engine performance and emissions control systems.

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