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Engine-Codes – Nissan – P0112 2007 Nissan Maxima

P0112 2007 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 code for a 2007 Nissan Maxima indicates a problem with the Intake Air Temperature (IAT) circuit, specifically a low input signal. Common causes include Faulty IAT sensor, Damaged wiring or connectors in the IAT circuit, Corrosion or poor connections in the sensor wiring. 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 2007 Nissan Maxima indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty IAT sensor, Damaged wiring or connectors in the IAT circuit, Corrosion or poor connections in the sensor wiring.
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 11, 2024
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Code P0112 2007 Nissan Maxima Description

The P0112 code for a 2007 Nissan Maxima indicates a problem with the Intake Air Temperature (IAT) circuit, specifically a low input signal. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for the engine control unit (ECU) to adjust the air-fuel mixture accordingly. A low input signal suggests that the temperature reading is lower than expected, which can lead to incorrect fuel delivery and ignition timing, affecting the engine's performance and efficiency.

OBDII Code P0112 2007 Nissan Maxima - Intake Air Temperature Circuit Low Input
P0112 2007 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2007 Nissan Maxima

  1. Faulty IAT sensor
  2. Damaged wiring or connectors in the IAT circuit
  3. Corrosion or poor connections in the sensor wiring
  4. Faulty ECU
  5. Intake air leaks near the sensor

Symptoms of P0112 2007 Nissan Maxima

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine hesitation or lack of power
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P0112 2007 Nissan Maxima

  1. Begin by locating the IAT sensor, typically located in the intake manifold or air intake tube.
  2. Inspect the sensor wiring and connectors for any visible damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the IAT sensor using a multimeter to ensure it is providing accurate readings. Replace the sensor if it is faulty.
  4. Clear the diagnostic trouble codes using an OBD-II scanner and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to pinpoint the exact cause, such as testing the ECU or checking for intake air leaks.

Cost to Fix P0112 2007 Nissan Maxima

The cost of repairing a P0112 code on a 2007 Nissan Maxima can vary depending on the specific cause of the issue. In general, replacing a faulty IAT sensor can cost between $50 and $100, while repairing damaged wiring or connectors may add additional labor costs. Overall, the total repair cost for this issue can range from $100 to $300, including parts and labor. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.

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 2007 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0112 on a 2007 Nissan Maxima?

The common symptoms of code P0112 on a 2007 Nissan Maxima include poor engine performance, decreased fuel efficiency, and possible stalling.

2. What does the OBDII code P0112 indicate in a 2007 Nissan Maxima?

Code P0112 in a 2007 Nissan Maxima 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 2007 Nissan Maxima?

Possible causes of code P0112 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 OBDII code P0112 on my 2007 Nissan Maxima?

Diagnosing code P0112 involves checking the IAT sensor for proper operation, inspecting the wiring and connectors for damage, and scanning the ECM for any related trouble codes.

5. Can a dirty air filter cause OBDII code P0112 on a 2007 Nissan Maxima?

A dirty air filter is unlikely to directly cause code P0112, but it can indirectly affect the IAT sensor readings by influencing the intake air temperature.

6. Is it safe to continue driving with OBDII code P0112 present on a 2007 Nissan Maxima?

It is generally not recommended to drive with code P0112, as it can lead to poor engine performance and potential issues that may affect the vehicle's drivability.

7. How can I repair OBDII code P0112 on my 2007 Nissan Maxima?

Repairing code P0112 may involve replacing the faulty IAT sensor, repairing damaged wiring or connectors, or addressing any underlying issues with the ECM.

8. Are there any DIY tips for fixing OBDII code P0112 on a 2007 Nissan Maxima?

DIY tips for fixing code P0112 include checking the IAT sensor connections, ensuring proper sensor operation, and clearing the trouble code with an OBDII scanner after any repairs.

9. Will resetting the ECM clear OBDII code P0112 on a 2007 Nissan Maxima?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing code P0112 is not addressed, the code is likely to reappear after driving the vehicle.

10. How much does it typically cost to repair OBDII code P0112 on a 2007 Nissan Maxima?

The cost to repair code P0112 on a 2007 Nissan Maxima can vary depending on the specific cause, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.

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