AutoCodes – Nissan – P0112 2008 Nissan Sentra

P0112 2008 Nissan Sentra 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 2008 Nissan Sentra 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 3,928

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 Nov 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0112 2008 Nissan Sentra 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 2008 Nissan Sentra - Intake Air Temperature Circuit Low Input - AutoCodes.com — P0112 2008 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2008 Nissan Sentra?

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 2008 Nissan Sentra?

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 low compressed air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replace the mass air flow sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0112 2008 Nissan Sentra 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 2008 Nissan Sentra code?

Need more information on how to fix the P0112 2008 Nissan Sentra 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 2008 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0112 on a 2008 Nissan Sentra?

The common symptoms of code P0112 on a 2008 Nissan Sentra include poor fuel efficiency, rough idle, and potentially stalling issues.

2. What does the OBDII code P0112 for a 2008 Nissan Sentra mean?

OBDII code P0112 for a 2008 Nissan Sentra refers to the Intake Air Temperature Circuit Low Input, indicating that the intake air temperature sensor is detecting a lower than normal temperature.

3. What are the possible causes of OBDII code P0112 on a 2008 Nissan Sentra?

Potential causes of code P0112 on a 2008 Nissan Sentra include a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the engine control module (ECM).

4. How can I diagnose the Intake Air Temperature Circuit Low Input issue on my 2008 Nissan Sentra?

To diagnose the P0112 code on a 2008 Nissan Sentra, you can use a multimeter to test the intake air temperature sensor's resistance, check the wiring for any damage, and inspect the connectors for proper connection.

5. Can a dirty air filter cause OBDII code P0112 on a 2008 Nissan Sentra?

A dirty air filter is unlikely to directly cause code P0112 on a 2008 Nissan Sentra. However, a restricted air filter can affect the intake air temperature readings and indirectly contribute to sensor issues.

6. How serious is the Intake Air Temperature Circuit Low Input problem on a 2008 Nissan Sentra?

While code P0112 may not cause immediate drivability issues, it can lead to poor engine performance and fuel efficiency over time if left unresolved. It is recommended to address the problem promptly.

7. Can I drive my 2008 Nissan Sentra with OBDII code P0112?

It is not recommended to drive your 2008 Nissan Sentra with an active P0112 code, as it can impact the overall performance of the vehicle and potentially lead to other issues.

8. How much does it typically cost to repair OBDII code P0112 on a 2008 Nissan Sentra?

The cost of repairing code P0112 on a 2008 Nissan Sentra can vary depending on the root cause of the issue. It may range from $100 to $300 for parts and labor.

9. Is it possible to reset the OBDII code P0112 on a 2008 Nissan Sentra without fixing the underlying problem?

Resetting the code without addressing the underlying issue will only temporarily clear the check engine light. The problem will likely reoccur until the root cause is fixed.

10. Can a DIY enthusiast fix OBDII code P0112 on a 2008 Nissan Sentra?

DIY enthusiasts with automotive repair experience may be able to address code P0112 by replacing the intake air temperature sensor or checking the wiring. However, professional diagnosis and repair are recommended for accurate resolution.