AutoCodes – Infiniti – P0174 2005 Infiniti G35

P0174 2005 Infiniti G35 Code - Fuel Injection System Too Lean Bank 2

Quick Answer

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring. 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
P0174 2005 Infiniti G35 indicates Fuel Injection System Too Lean Bank 2.
Common causes
Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,484
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 21, 2022
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Code P0174 2005 Infiniti G35 Description

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).
OBDII Code P0174 2005 Infiniti G35 - Fuel Injection System Too Lean Bank 2 - AutoCodes.com
P0174 2005 Infiniti G35 Code - Fuel Injection System Too Lean Bank 2

What are the Possible Causes of the DTC P0174 2005 Infiniti G35?

  • Intake air leaks
  • Faulty front heated oxygen sensor
  • Ignition misfiring
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Incorrect fuel pressure
  • Lack of fuel
  • Faulty Mass Air Flow (MAF) sensor
  • Incorrect Positive Crankcase Ventilation (PCV) hose connection

How to Fix the DTC P0174 2005 Infiniti G35?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0174 2005 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0174 2005 Infiniti G35 code?

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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 P0174 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0174 on a 2005 Infiniti G35?

- Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the "Fuel Injection System Too Lean Bank 2" mean in relation to OBDII code P0174 on a 2005 Infiniti G35?

- This means that there is a lean fuel condition in the fuel injection system on the bank of cylinders that includes cylinder 2 in your Infiniti G35.

3. What are the possible causes of OBDII code P0174 on a 2005 Infiniti G35?

- Common causes include a vacuum leak, faulty oxygen sensors, a dirty or clogged fuel injector, a malfunctioning mass airflow sensor, or a fuel delivery issue.

4. How can I diagnose the source of OBDII code P0174 on my 2005 Infiniti G35?

- You can use a scan tool to check for any additional trouble codes, inspect the intake system for leaks, check the oxygen sensors, clean the mass airflow sensor, and test the fuel injectors.

5. Can driving with OBDII code P0174 on a 2005 Infiniti G35 cause further damage to the vehicle?

- Continuing to drive with a lean fuel condition can potentially cause damage to the engine over time, so it is recommended to address the issue promptly.

6. How can I repair OBDII code P0174 on a 2005 Infiniti G35?

- Repair options may include fixing any vacuum leaks, replacing faulty oxygen sensors, cleaning or replacing the fuel injectors, cleaning the mass airflow sensor, or addressing any fuel delivery issues.

7. Are there any DIY tips for addressing OBDII code P0174 on a 2005 Infiniti G35?

- While some basic diagnostic steps can be performed by DIY enthusiasts, complex repairs may require professional assistance to ensure proper diagnosis and resolution.

8. How much does it typically cost to fix OBDII code P0174 on a 2005 Infiniti G35?

- The cost of repair can vary depending on the specific cause of the lean fuel condition, but it may range from a few hundred to over a thousand dollars for parts and labor.

9. How often does OBDII code P0174 occur in 2005 Infiniti G35 vehicles?

- OBDII code P0174 can occur in 2005 Infiniti G35 vehicles due to various factors, including age, mileage, maintenance history, and driving conditions.

10. Is it safe to drive my 2005 Infiniti G35 with OBDII code P0174 if the symptoms are not severe?

- While driving with mild symptoms may be possible for a short period, it is recommended to address the issue promptly to prevent potential long-term damage to the vehicle.

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