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Engine-Codes – Nissan – P0112 2005 Nissan Maxima

P0112 2005 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 code on a 2005 Nissan Maxima indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically a low input signal. Common causes include Faulty Intake Air Temperature sensor, Damaged wiring or connectors in the sensor circuit, Corroded terminals in the sensor connector. 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 2005 Nissan Maxima indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature sensor, Damaged wiring or connectors in the sensor circuit, Corroded terminals in the sensor connector.
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 12, 2024
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Code P0112 2005 Nissan Maxima Description

The P0112 code on a 2005 Nissan Maxima indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically a low input signal. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is essential for optimizing fuel delivery and ignition timing. When the sensor detects a low input signal, it means that the temperature reading is lower than expected, which can lead to various performance issues.

OBDII Code P0112 2005 Nissan Maxima - Intake Air Temperature Circuit Low Input
P0112 2005 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2005 Nissan Maxima

  1. Faulty Intake Air Temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corroded terminals in the sensor connector
  4. Engine control module malfunction
  5. Air intake system leaks or restrictions

Symptoms of P0112 2005 Nissan Maxima

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine running rich
  4. Transmission shifting issues
  5. Check Engine Light illuminated

How to Fix P0112 2005 Nissan Maxima

  1. Begin by locating the Intake Air Temperature sensor on the air intake duct or manifold.
  2. Inspect the sensor and wiring for any visible damage or corrosion.
  3. Test the sensor using a multimeter to verify if it is within the specified resistance range.
  4. If the sensor is faulty, replace it with a new one and ensure proper installation.
  5. Clear the diagnostic trouble codes using a scan tool and test drive the vehicle to verify the repair.

Cost to Fix P0112 2005 Nissan Maxima

The typical repair costs for addressing a P0112 code on a 2005 Nissan Maxima can range from $100 to $300, including parts and labor. However, it's important to note that the actual cost can vary depending on the specific diagnosis time and labor rates at auto repair shops. Factors such as location, vehicle make and model, and engine type can also influence the final repair bill. It's recommended to inquire about local rates for a more accurate estimate.

When is the Code Detected?

An excessively low voltage from the sensor is sent to ECM.

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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 2005 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0112 in a 2005 Nissan Maxima?

The common symptoms of code P0112 in a 2005 Nissan Maxima include poor engine performance, decreased fuel efficiency, and in some cases, the Check Engine light may illuminate.

2. What does the OBDII code P0112 on a 2005 Nissan Maxima indicate?

Code P0112 on a 2005 Nissan Maxima specifically points to an issue with the Intake Air Temperature (IAT) sensor circuit registering a low input.

3. What are the possible causes of OBDII code P0112 in a 2005 Nissan Maxima?

Common causes of code P0112 in a 2005 Nissan Maxima include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the Intake Air Temperature sensor on a 2005 Nissan Maxima?

To diagnose the IAT sensor, you can use a multimeter to check for resistance and voltage readings, inspect the sensor and its wiring for any visible damage, and perform a scan tool diagnosis to gather more data.

5. Can a dirty air filter trigger OBDII code P0112 in a 2005 Nissan Maxima?

While a dirty air filter may affect the overall engine performance, it is unlikely to directly trigger code P0112. However, maintaining a clean air filter is important for optimal engine function.

6. Is it safe to continue driving my 2005 Nissan Maxima with OBDII code P0112 present?

It is generally not recommended to continue driving with an active OBDII trouble code like P0112, as it can lead to further engine issues and potential damage if left unresolved.

7. How can I reset the Check Engine light after fixing OBDII code P0112 on my 2005 Nissan Maxima?

You can reset the Check Engine light using an OBDII scanner tool or by disconnecting the car battery for a few minutes. Ensure the underlying issue causing the code has been resolved before clearing the light.

8. Will fixing OBDII code P0112 on a 2005 Nissan Maxima improve fuel efficiency?

Yes, addressing code P0112 by fixing the Intake Air Temperature circuit low input can help improve fuel efficiency and restore proper engine performance in your 2005 Nissan Maxima.

9. Can a DIY enthusiast repair OBDII code P0112 on a 2005 Nissan Maxima?

Depending on your automotive repair skills and access to tools, a DIY enthusiast may be able to address code P0112 by replacing the faulty IAT sensor, checking wiring connections, and conducting basic diagnostic tests.

10. How much should I expect to pay for professional repair of OBDII code P0112 on a 2005 Nissan Maxima?

The cost of professional repair for code P0112 in a 2005 Nissan Maxima can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

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