AutoCodes – Nissan – P0112 2011 Nissan Sentra

P0112 2011 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 2011 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 3,785

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 2011 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 2011 Nissan Sentra - Intake Air Temperature Circuit Low Input - AutoCodes.com — P0112 2011 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2011 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 2011 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 2011 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 2011 Nissan Sentra 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 2011 Nissan Sentra Code

1. What does the OBDII code P0112 for a 2011 Nissan Sentra mean?

The P0112 code indicates a low input from the intake air temperature (IAT) sensor circuit in the 2011 Nissan Sentra.

2. What are the common symptoms of a P0112 code on a 2011 Nissan Sentra?

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

3. What are possible causes of the P0112 code on a 2011 Nissan Sentra?

Potential causes of the P0112 code include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, a malfunctioning PCM (powertrain control module), or issues with the intake air temperature sensor itself.

4. How do I diagnose the P0112 code on my 2011 Nissan Sentra?

Diagnosing the P0112 code involves using an OBDII scanner to retrieve the code, inspecting the IAT sensor and its wiring for damage, checking the sensor's resistance, and testing the PCM's functionality.

5. Can I still drive my 2011 Nissan Sentra with a P0112 code?

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

6. How can I repair a P0112 code on a 2011 Nissan Sentra?

Repairing a P0112 code may involve replacing the IAT sensor, repairing or replacing damaged wiring or connectors, resetting the PCM, or seeking professional help for further diagnosis and repair.

7. Is it possible to reset the P0112 code on a 2011 Nissan Sentra without fixing the issue?

While you can clear the code using an OBDII scanner, the underlying problem causing the P0112 code will persist until properly addressed. Simply resetting the code without fixing the issue may lead to further complications.

8. Can a dirty air filter cause a P0112 code on a 2011 Nissan Sentra?

A dirty air filter can indirectly affect the intake air temperature, but it is not a common cause of the P0112 code. It's important to check the IAT sensor and related components for issues first.

9. How much does it typically cost to repair a P0112 code on a 2011 Nissan Sentra?

The cost of repairing a P0112 code can vary depending on the specific cause of the issue. Costs may include parts such as the IAT sensor, labor for diagnosis and repair, and any additional components that need replacing.

10. Will a P0112 code on a 2011 Nissan Sentra affect the vehicle's emissions?

A P0112 code may impact the vehicle's emissions due to inefficient fuel combustion resulting from incorrect intake air temperature readings. It's essential to address the issue to ensure optimal engine performance and emission control.