AutoCodes – Nissan – P0112 2009 Nissan Versa

P0112 2009 Nissan Versa 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 Nissan Versa 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 2,634
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 Nissan Versa 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 Nissan Versa - Intake Air Temperature Circuit Low Input - AutoCodes.com
P0112 2009 Nissan Versa Code - Intake Air Temperature Circuit Low Input

What are the Possible Causes of the DTC P0112 2009 Nissan Versa?

  • 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 Nissan Versa?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 2009 Nissan Versa 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 Nissan Versa code?

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

Need Help with the Code?

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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 2009 Nissan Versa Code

1. What does the OBDII code P0112 on a 2009 Nissan Versa mean?

The code P0112 indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically a low input signal.

2. What are the common symptoms of the P0112 code on a 2009 Nissan Versa?

Common symptoms of the P0112 code include poor engine performance, rough idling, stalling, decreased fuel efficiency, and in some cases, the Check Engine light may illuminate.

3. What are the possible causes of the P0112 code on a 2009 Nissan Versa?

Potential causes of the P0112 code include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, a malfunctioning Engine Control Module (ECM), or a problem with the intake air temperature itself.

4. How can I diagnose the P0112 code on my 2009 Nissan Versa?

Diagnosing the P0112 code involves using a scan tool to read the code, checking the IAT sensor for proper voltage and resistance, inspecting the wiring and connectors for damage, and verifying the intake air temperature sensor readings.

5. How can I repair the P0112 code on my 2009 Nissan Versa?

To repair the P0112 code, you may need to replace the faulty IAT sensor, repair or replace damaged wiring or connectors, reset the ECM, and clear the trouble code using a scan tool.

6. Can I drive my 2009 Nissan Versa with the P0112 code?

It is not recommended to drive your vehicle with the P0112 code unresolved, as it can lead to further engine damage and poor performance. It's best to address the issue promptly.

7. How much does it cost to fix the P0112 code on a 2009 Nissan Versa?

The cost of fixing the P0112 code can vary depending on the root cause of the issue. Replacing the IAT sensor or repairing wiring may cost anywhere from $50 to $200, not including labor charges.

8. Will resetting the Check Engine light resolve the P0112 code on my 2009 Nissan Versa?

Simply resetting the Check Engine light will not fix the underlying issue causing the P0112 code. Proper diagnosis and repair are necessary to address the problem effectively.

9. How often does the P0112 code occur in a 2009 Nissan Versa?

The P0112 code can occur sporadically or persistently, depending on the cause of the issue. It is essential to address the code as soon as possible to prevent further complications.

10. Can a DIY enthusiast fix the P0112 code on a 2009 Nissan Versa?

Depending on your mechanical skills and access to tools, a DIY enthusiast may be able to diagnose and repair the P0112 code. However, if you are unsure or uncomfortable with the process, it's best to seek professional help.

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