AutoCodes – Toyota – P0112 2009 Toyota Camry

P0112 2009 Toyota Camry 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 2009 Toyota Camry 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 3,293
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 2009 Toyota Camry 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 2009 Toyota Camry - Intake Air Temperature Circuit Low Input - AutoCodes.com
P0112 2009 Toyota Camry Code - Intake Air Temperature Circuit Low Input

What are the Possible Causes of the DTC P0112 2009 Toyota Camry?

  • 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 2009 Toyota Camry?

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 2009 Toyota Camry 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 2009 Toyota Camry code?

Need more information on how to fix the P0112 2009 Toyota Camry code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0112 2009 Toyota Camry 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 2009 Toyota Camry Code

1. What are the common symptoms of OBDII code P0112 on a 2009 Toyota Camry?

The common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0112 for a 2009 Toyota Camry indicate?

The code P0112 indicates a low input signal from the intake air temperature (IAT) sensor circuit.

3. What are the possible causes of OBDII code P0112 on a 2009 Toyota Camry?

Potential causes include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, a failed engine coolant temperature (ECT) sensor, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the issue related to OBDII code P0112 on my 2009 Toyota Camry?

You can start by checking the IAT sensor for proper connection and functionality, inspecting the wiring for any damage, and testing the ECT sensor and ECM for faults using an OBDII scanner.

5. Can I drive my 2009 Toyota Camry with OBDII code P0112?

It is not recommended to drive the vehicle with a persistent P0112 code as it can lead to further engine issues and potentially worsen fuel efficiency.

6. How can I fix OBDII code P0112 on my 2009 Toyota Camry?

To fix the code P0112, you may need to replace the faulty IAT sensor, repair any damaged wiring, replace the ECT sensor if necessary, or reprogram the ECM.

7. Are there any DIY solutions to troubleshoot OBDII code P0112 on a 2009 Toyota Camry?

While basic checks like inspecting the sensor connections and wiring can be done DIY, it is recommended to seek professional help for accurate diagnosis and repair.

8. What is the importance of the intake air temperature sensor in a 2009 Toyota Camry?

The intake air temperature sensor provides crucial data to the ECM for adjusting the air-fuel mixture, ignition timing, and other engine functions to ensure optimal performance and efficiency.

9. How long does it typically take to repair OBDII code P0112 on a 2009 Toyota Camry?

The repair time for OBDII code P0112 can vary depending on the exact cause of the issue, but it may take a few hours to a half-day for a professional technician to diagnose and fix the problem.

10. Can a faulty intake air temperature sensor cause other issues in a 2009 Toyota Camry?

Yes, a faulty intake air temperature sensor can lead to poor engine performance, decreased fuel efficiency, and potential damage to engine components if not addressed promptly.

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