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P0112 2010 Nissan Altima Sedan Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2010 Nissan Altima Sedan refers to the Intake Air Temperature (IAT) Circuit Low Input. Common causes include Faulty IAT sensor, Damaged wiring or connectors in the IAT circuit, Malfunctioning ECM. 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 2010 Nissan Altima Sedan indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty IAT sensor, Damaged wiring or connectors in the IAT circuit, Malfunctioning ECM.
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 17, 2024
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Code P0112 2010 Nissan Altima Sedan Description

The P0112 diagnostic trouble code (DTC) for a 2010 Nissan Altima Sedan refers to the Intake Air Temperature (IAT) Circuit Low Input. This code indicates that the Engine Control Module (ECM) has detected a lower than normal voltage signal from the IAT sensor. The IAT sensor is responsible for measuring the temperature of the air entering the engine, which is crucial for determining the correct air-fuel mixture for combustion. When the ECM receives a low input signal from the IAT sensor, it can lead to incorrect fuel delivery, ignition timing, and overall engine performance.

OBDII Code P0112 2010 Nissan Altima Sedan - Intake Air Temperature Circuit Low Input
P0112 2010 Nissan Altima Sedan Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2010 Nissan Altima Sedan

  1. Faulty IAT sensor
  2. Damaged wiring or connectors in the IAT circuit
  3. Malfunctioning ECM
  4. Intake air temperature out of range
  5. Poor electrical connection or corrosion in the sensor circuit

Symptoms of P0112 2010 Nissan Altima Sedan

  1. Decreased fuel efficiency
  2. Rough idling or erratic engine performance
  3. Hesitation or lack of power during acceleration
  4. Engine stalling or difficulty starting
  5. Illumination of the Check Engine Light

How to Fix P0112 2010 Nissan Altima Sedan

  1. Begin by visually inspecting the wiring and connectors in the IAT circuit for any damage or corrosion. Repair or replace any damaged components.
  2. Test the IAT sensor using a multimeter to ensure it is functioning properly. Replace the sensor if it is faulty.
  3. Clear the DTC and reset the ECM to see if the code returns. If it does, further diagnosis may be required.
  4. Check the intake air temperature to ensure it is within the specified range. If not, investigate potential causes such as a clogged air filter or intake air leak.
  5. If the issue persists, consult a professional technician for advanced diagnostics and potential ECM testing or replacement.

Cost to Fix P0112 2010 Nissan Altima Sedan

The typical repair costs for addressing a P0112 code on a 2010 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, the cost of replacing an IAT sensor ranges from $50 to $150, while labor costs can range from $80 to $150 per hour. Additional costs may be incurred for diagnostic testing, wiring repairs, or ECM replacement if necessary. It is advisable to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0112 2010 Nissan Altima Sedan

Intake Air Temperature (IAT) sensor is built into the mass air flow sensor. Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

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 2010 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0112 in a 2010 Nissan Altima Sedan?

The common symptoms of code P0112 in a 2010 Nissan Altima Sedan include poor fuel economy, rough idling, engine stalling, and a decrease in overall engine performance.

2. What does the OBDII code P0112 on a 2010 Nissan Altima Sedan indicate?

The OBDII code P0112 for a 2010 Nissan Altima Sedan indicates a low input signal from the intake air temperature (IAT) sensor circuit.

3. What are the possible causes of OBDII code P0112 in a 2010 Nissan Altima Sedan?

Possible causes of code P0112 in a 2010 Nissan Altima Sedan include a faulty intake air temperature sensor, damaged sensor wiring, a corroded connector, or issues with the engine control module.

4. How can I diagnose the OBDII code P0112 on my 2010 Nissan Altima Sedan?

To diagnose code P0112 on a 2010 Nissan Altima Sedan, you can use an OBDII scanner to read the code, check the intake air temperature sensor and its wiring for any visible damage, and test the sensor's resistance with a multimeter.

5. Can I drive my 2010 Nissan Altima Sedan with OBDII code P0112?

It is not recommended to drive your 2010 Nissan Altima Sedan with OBDII code P0112, as it can lead to poor engine performance and potential damage. It is best to address the issue promptly.

6. How can I repair OBDII code P0112 on my 2010 Nissan Altima Sedan?

To repair code P0112 on a 2010 Nissan Altima Sedan, you may need to replace the intake air temperature sensor, repair damaged wiring or connectors, and clear the trouble code with an OBDII scanner.

7. Is it possible to reset OBDII code P0112 on a 2010 Nissan Altima Sedan without fixing the underlying issue?

While you can clear the trouble code temporarily with an OBDII scanner, it is important to address the root cause of code P0112 in your 2010 Nissan Altima Sedan to prevent future issues.

8. Can a dirty air filter trigger OBDII code P0112 in a 2010 Nissan Altima Sedan?

A dirty air filter may indirectly contribute to code P0112 in a 2010 Nissan Altima Sedan by affecting the intake air temperature readings. It is recommended to check and replace the air filter if needed.

9. How long does it typically take to repair OBDII code P0112 on a 2010 Nissan Altima Sedan?

The repair time for code P0112 on a 2010 Nissan Altima Sedan can vary depending on the exact cause of the issue. Simple fixes like replacing the intake air temperature sensor can usually be done within an hour.

10. Can a malfunctioning IAT sensor cause other problems in a 2010 Nissan Altima Sedan besides triggering code P0112?

Yes, a malfunctioning intake air temperature (IAT) sensor in a 2010 Nissan Altima Sedan can lead to other issues such as incorrect fuel mixture, engine hesitation, and poor overall engine performance.

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