P0112 2004 Infiniti G35 Code - Intake Air Temperature Circuit Low Input
Quick Answer
The P0112 code for a 2004 Infiniti G35 indicates a problem with the Intake Air Temperature (IAT) sensor circuit, specifically a low input signal. Common causes include Faulty IAT Sensor: The IAT sensor itself may be malfunctioning, providing incorrect temperature readings to the ECU, Damaged Wiring or Connectors: Damage to the wiring or connectors in the IAT sensor circuit can cause a low input signal, ECU Malfunction: A problem with the engine control unit (ECU) could also be responsible for the low input 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 2004 Infiniti G35 indicates Intake Air Temperature Circuit Low Input.
- Common causes
- Common causes include Faulty IAT Sensor: The IAT sensor itself may be malfunctioning, providing incorrect temperature readings to the ECU, Damaged Wiring or Connectors: Damage to the wiring or connectors in the IAT sensor circuit can cause a low input signal, ECU Malfunction: A problem with the engine control unit (ECU) could also be responsible for the low input 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0112 2004 Infiniti G35 Description
The P0112 code for a 2004 Infiniti G35 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 crucial for the proper functioning of the engine control unit (ECU). When the ECU receives a low input signal from the IAT sensor, it can lead to incorrect air-fuel mixture calculations, affecting the engine's performance and efficiency.
Common Causes of P0112 2004 Infiniti G35
- Faulty IAT Sensor: The IAT sensor itself may be malfunctioning, providing incorrect temperature readings to the ECU.
- Damaged Wiring or Connectors: Damage to the wiring or connectors in the IAT sensor circuit can cause a low input signal.
- ECU Malfunction: A problem with the engine control unit (ECU) could also be responsible for the low input signal from the IAT sensor.
- Intake Air Leaks: Leaks in the intake system can affect the IAT sensor readings and trigger the P0112 code.
- Dirty or Clogged Air Filter: A dirty or clogged air filter can impact the airflow and temperature readings at the IAT sensor.
Symptoms of P0112 2004 Infiniti G35
- Check Engine Light: The most common symptom associated with the P0112 code is the illumination of the Check Engine Light on the dashboard.
- Poor Fuel Economy: A malfunctioning IAT sensor can lead to incorrect air-fuel mixture calculations, resulting in decreased fuel efficiency.
- Rough Idling: Incorrect air-fuel ratios can cause the engine to idle roughly or inconsistently.
- Hesitation During Acceleration: The engine may hesitate or stumble during acceleration due to improper fuel delivery.
- Engine Stalling: In severe cases, the engine may stall when coming to a stop or during acceleration.
How to Fix P0112 2004 Infiniti G35
- Diagnose the Issue: Use a scan tool to retrieve the fault code and perform further diagnostics to determine the exact cause of the low input signal from the IAT sensor.
- Inspect Wiring and Connectors: Check the wiring and connectors in the IAT sensor circuit for any damage, corrosion, or loose connections. Repair or replace as needed.
- Test the IAT Sensor: Test the IAT sensor using a multimeter to verify its functionality. Replace the sensor if it is faulty.
- Clear the Code: After repairing the issue, clear the fault code from the ECU memory using a scan tool.
- Test Drive: Take the vehicle for a test drive to ensure that the symptoms associated with the P0112 code have been resolved.
Cost to Fix P0112 2004 Infiniti G35
The typical repair costs for addressing the P0112 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty IAT sensor can range from $50 to $150, while repairing damaged wiring or connectors may cost between $100 and $200. Labor costs at auto repair shops can range from $80 to $150 per hour, and the total repair bill could amount to $150 to $500 or more, depending on the extent of the repairs needed. It's advisable to check with local auto repair shops for more accurate cost estimates based on the specific circumstances of your vehicle.
When is the Code Detected?
Need more information about the P0112 2004 Infiniti G35 code?
Need more information on how to fix the P0112 2004 Infiniti G35 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0112 2004 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0112 2004 Infiniti G35 Code
1. What are the common symptoms of OBDII code P0112 in a 2004 Infiniti G35?
- Common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and in some cases, the Check Engine light may illuminate.
2. What does the OBDII code P0112 indicating "Intake Air Temperature Circuit Low Input" mean for a 2004 Infiniti G35?
- This code indicates that the Engine Control Module (ECM) has detected a low input signal from the Intake Air Temperature (IAT) sensor.
3. What are the possible causes of OBDII code P0112 in a 2004 Infiniti G35?
- Possible causes include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, a disconnected or malfunctioning IAT sensor, or a problem with the ECM.
4. How can I diagnose the OBDII code P0112 in my 2004 Infiniti G35?
- You can diagnose this code by visually inspecting the IAT sensor and its wiring, testing the sensor's resistance with a multimeter, and using a scan tool to monitor IAT sensor data.
5. Can I drive my 2004 Infiniti G35 with the OBDII code P0112?
- It is not recommended to drive the vehicle with this code as it can lead to poor engine performance and potential damage. It's best to address the issue promptly.
6. How can I repair OBDII code P0112 in a 2004 Infiniti G35?
- Repair options include replacing the faulty IAT sensor, repairing damaged wiring or connectors, ensuring the sensor is properly connected, or addressing any ECM issues.
7. Will resetting the OBDII code P0112 in my 2004 Infiniti G35 make it go away permanently?
- Resetting the code may temporarily clear the Check Engine light, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle.
8. Are there any DIY tips for troubleshooting OBDII code P0112 in a 2004 Infiniti G35?
- DIY tips include checking the IAT sensor for dirt or debris, ensuring proper sensor connection, inspecting wiring for damage, and consulting the vehicle's service manual for guidance.
9. How much does it typically cost to repair OBDII code P0112 in a 2004 Infiniti G35 at a mechanic or dealership?
- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.
10. Is OBDII code P0112 a common issue in 2004 Infiniti G35 vehicles?
- While not extremely common, issues with the IAT sensor leading to code P0112 can occur in 2004 Infiniti G35 vehicles due to sensor failure or wiring issues.
Discuss the causes and fixes for P0112 2004 Infiniti G35 OBDII Code
Code P0112 2004 Infiniti G35 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.