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P0112 2008 Nissan Pathfinder Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2008 Nissan Pathfinder indicates a problem with the Intake Air Temperature (IAT) sensor circuit registering a low input. Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Disconnected or corroded sensor ground. 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 Pathfinder indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Disconnected or corroded sensor ground.
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 13, 2024
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Code P0112 2008 Nissan Pathfinder Description

The P0112 diagnostic trouble code (DTC) for a 2008 Nissan Pathfinder indicates a problem with the Intake Air Temperature (IAT) sensor circuit registering a low input. The IAT sensor is responsible for measuring the temperature of the air entering the engine. This information is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency. When the ECM detects a low input from the IAT sensor, it may cause the engine to run rich, leading to decreased fuel efficiency, rough idling, and potentially even engine stalling.

OBDII Code P0112 2008 Nissan Pathfinder - Intake Air Temperature Circuit Low Input
P0112 2008 Nissan Pathfinder Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2008 Nissan Pathfinder

  1. Faulty IAT sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Disconnected or corroded sensor ground
  4. Malfunctioning ECM
  5. Environmental factors such as extreme temperatures affecting sensor performance

Symptoms of P0112 2008 Nissan Pathfinder

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine hesitation or lack of power
  4. Illumination of the check engine light
  5. Potential for other related DTCs to be triggered

How to Fix P0112 2008 Nissan Pathfinder

  1. Begin by conducting a visual inspection of the IAT sensor and its wiring for any visible damage or corrosion.
  2. Use a multimeter to test the resistance of the IAT sensor and compare it to manufacturer specifications.
  3. Check the sensor ground connection for proper continuity and repair any issues if necessary.
  4. If the sensor and wiring are in good condition, proceed to test the ECM for proper functionality or potential software updates.
  5. Clear the DTC using a scan tool after completing the repair process and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0112 2008 Nissan Pathfinder

The typical repair costs for addressing a P0112 code on a 2008 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, replacing a faulty IAT sensor can cost between $50 to $100 for the part, with additional labor costs ranging from $80 to $150 per hour. If the issue is related to wiring or ECM problems, the repair costs may increase accordingly. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific diagnosis and repair needed.

What does this mean?

Tech Notes for P0112 2008 Nissan Pathfinder

Intake Air Temperature (IAT) sensor is built into the Mass Air Flow (MAF) 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 2008 Nissan Pathfinder Code

1. What does OBDII code P0112 on a 2008 Nissan Pathfinder mean?

The code P0112 indicates a problem with the Intake Air Temperature Circuit, specifically a low input signal.

2. What are the common symptoms of OBDII code P0112 on a 2008 Nissan Pathfinder?

Common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and potential stalling.

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

Potential causes of this code 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 a 2008 Nissan Pathfinder?

Diagnosis involves testing the intake air temperature sensor using a multimeter, checking the wiring for any damage, and inspecting connectors for corrosion or loose connections.

5. Can I continue to drive my 2008 Nissan Pathfinder with OBDII code P0112?

It is not recommended to drive with this code as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0112 on a 2008 Nissan Pathfinder?

Repair options include replacing the intake air temperature sensor, repairing or replacing damaged wiring, and resetting the ECM to clear the code.

7. Are there any DIY tips for fixing OBDII code P0112 on a 2008 Nissan Pathfinder?

DIY tips include ensuring the sensor is clean and free of debris, checking for any visible damage to wiring, and consulting the vehicle's service manual for specific instructions.

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

Costs can vary depending on the specific issue, but replacing the intake air temperature sensor can range from $50 to $150, while professional labor costs may add to the total.

9. Will resetting the OBDII code P0112 on a 2008 Nissan Pathfinder make it go away permanently?

Resetting the code may temporarily clear it, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause.

10. Can a mechanic easily fix OBDII code P0112 on a 2008 Nissan Pathfinder?

A qualified mechanic should be able to diagnose and repair the Intake Air Temperature Circuit low input issue efficiently, ensuring proper functioning of the vehicle.

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