Engine-CodesInfiniti – P0112 2006 Infiniti G35

P0112 2006 Infiniti G35 Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2006 Infiniti G35 indicates that there is a low input signal from the intake air temperature (IAT) sensor circuit. Common causes include Faulty IAT Sensor: The most common cause of the P0112 code is a malfunctioning IAT sensor that is sending a low input signal to the ECM, Damaged Wiring or Connectors: Wiring or connectors in the IAT sensor circuit may be damaged, leading to a poor connection or signal disruption, ECM Malfunction: A malfunctioning ECM can also cause the P0112 code by misinterpreting the signal from the IAT sensor. 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 2006 Infiniti G35 indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty IAT Sensor: The most common cause of the P0112 code is a malfunctioning IAT sensor that is sending a low input signal to the ECM, Damaged Wiring or Connectors: Wiring or connectors in the IAT sensor circuit may be damaged, leading to a poor connection or signal disruption, ECM Malfunction: A malfunctioning ECM can also cause the P0112 code by misinterpreting the signal from the IAT sensor.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0112 2006 Infiniti G35 Description

The P0112 diagnostic trouble code (DTC) for a 2006 Infiniti G35 indicates that there is a low input signal from the intake air temperature (IAT) sensor circuit. The IAT sensor is a crucial component of the vehicle's engine management system, as it measures the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust fuel delivery and ignition timing for optimal performance and efficiency.

OBDII Code P0112 2006 Infiniti G35 - Intake Air Temperature Circuit Low Input
P0112 2006 Infiniti G35 Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2006 Infiniti G35

  1. Faulty IAT Sensor: The most common cause of the P0112 code is a malfunctioning IAT sensor that is sending a low input signal to the ECM.
  2. Damaged Wiring or Connectors: Wiring or connectors in the IAT sensor circuit may be damaged, leading to a poor connection or signal disruption.
  3. ECM Malfunction: A malfunctioning ECM can also cause the P0112 code by misinterpreting the signal from the IAT sensor.
  4. Intake Air Leaks: Leaks in the intake air system can affect the IAT sensor readings, triggering the P0112 code.
  5. Engine Coolant Temperature Sensor Issue: A faulty engine coolant temperature sensor can also cause the ECM to misinterpret the IAT sensor readings, leading to the P0112 code.

Symptoms of P0112 2006 Infiniti G35

  1. Check Engine Light: The most common symptom associated with the P0112 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Poor Performance: The engine may exhibit poor acceleration, hesitation, or rough idling due to incorrect fuel delivery and ignition timing.
  3. Decreased Fuel Efficiency: A low input signal from the IAT sensor can lead to decreased fuel efficiency as the engine may run rich or lean.
  4. Rough Idling: The engine may idle roughly or inconsistently due to incorrect air/fuel mixture caused by the faulty IAT sensor.
  5. Emission Issues: The vehicle may fail emissions tests due to increased emissions caused by improper engine management.

How to Fix P0112 2006 Infiniti G35

  1. Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the IAT sensor, wiring, and connectors to identify the root cause of the problem.
  2. Replace the IAT Sensor: If the sensor is faulty, replace it with a new one following the manufacturer's specifications.
  3. Repair Wiring or Connectors: Repair or replace any damaged wiring or connectors in the IAT sensor circuit to ensure a proper connection.
  4. Check and Reset the ECM: Check the ECM for any faults or malfunctions and reset it after completing the repair to clear the DTC.
  5. Test Drive and Monitor: After the repair, test drive the vehicle to ensure that the issue has been resolved. Monitor the engine performance and check for any recurring DTCs.

Cost to Fix P0112 2006 Infiniti G35

The typical repair costs for addressing the P0112 code on a 2006 Infiniti G35 can vary depending on the specific cause of the issue. In general, the cost of replacing the IAT sensor ranges from $50 to $150, while repairing wiring or connectors may add additional labor costs. The total repair cost, including parts and labor, can range from $100 to $300 or more.

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 2006 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0112 in a 2006 Infiniti G35?

- Common symptoms include poor fuel efficiency, rough idle, engine stalling, and the Check Engine Light illuminating.

2. What does the OBDII code P0112 "Intake Air Temperature Circuit Low Input" mean in a 2006 Infiniti G35?

- This code indicates that the intake air temperature sensor is reporting a temperature that is lower than expected by the engine control module.

3. What are the possible causes of OBDII code P0112 in a 2006 Infiniti G35?

- The code may be triggered by a faulty intake air temperature sensor, a damaged sensor wiring harness, or a problem with the sensor circuit.

4. How can I diagnose the OBDII code P0112 in my 2006 Infiniti G35?

- You can diagnose this code by checking the intake air temperature sensor for proper operation, inspecting the wiring for any damage, and using a scan tool to monitor sensor readings.

5. Can a dirty air filter trigger the OBDII code P0112 in a 2006 Infiniti G35?

- A dirty air filter is unlikely to trigger this specific code, as it is related to the intake air temperature sensor specifically.

6. Is it safe to continue driving with the OBDII code P0112 illuminated in a 2006 Infiniti G35?

- It is generally safe to drive with this code, but it is recommended to address the underlying issue promptly to prevent potential performance issues.

7. How can I repair OBDII code P0112 in my 2006 Infiniti G35?

- To repair this code, you may need to replace the intake air temperature sensor, repair any damaged wiring, or address any other related issues identified during diagnosis.

8. Will resetting the OBDII code P0112 in a 2006 Infiniti G35 make it go away permanently?

- Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue is not addressed, the code is likely to reappear.

9. Can extreme weather conditions affect the intake air temperature sensor and trigger OBDII code P0112 in a 2006 Infiniti G35?

- Yes, extreme cold or heat can potentially affect the intake air temperature sensor readings and trigger this code.

10. Should I seek professional help to diagnose and repair OBDII code P0112 in my 2006 Infiniti G35?

- If you are not familiar with automotive diagnostics and repairs, it is recommended to seek professional help to accurately diagnose and fix the issue related to this code.

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