P0174 2004 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 2004 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.
Code P0174 2004 Infiniti G35 Description
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).
What are the Possible Causes of the DTC P0174 2004 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 2004 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 2004 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.
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Frequently Asked Questions about P0174 2004 Infiniti G35 Code
1. What are the common symptoms of OBDII code P0174 in a 2004 Infiniti G35?
Symptoms may include rough idling, poor acceleration, engine misfires, hesitation, and decreased fuel efficiency.
2. What does the OBDII code P0174 on a 2004 Infiniti G35 indicate?
The code indicates a fuel injection system too lean condition on Bank 2 of the engine, meaning there is an imbalance in the air-to-fuel ratio.
3. What are the possible causes of OBDII code P0174 in a 2004 Infiniti G35?
Common causes include a vacuum leak, faulty oxygen sensors, clogged fuel injectors, a malfunctioning mass airflow sensor, or a failing fuel pump.
4. How can I diagnose the OBDII code P0174 on my 2004 Infiniti G35?
Diagnosis typically involves inspecting for vacuum leaks, checking the oxygen sensors, testing the fuel injectors, cleaning or replacing the mass airflow sensor, and ensuring the fuel pump is functioning properly.
5. Can a dirty air filter trigger OBDII code P0174 in a 2004 Infiniti G35?
Yes, a dirty or clogged air filter can disrupt the air-to-fuel ratio and contribute to a lean condition, potentially triggering the P0174 trouble code.
6. Is it safe to drive my 2004 Infiniti G35 with OBDII code P0174 present?
It is not recommended to drive the vehicle with a P0174 code as it can lead to further engine damage and reduced performance. Immediate attention and repairs are advised.
7. How can I clear the OBDII code P0174 on my 2004 Infiniti G35?
After addressing the root cause of the lean condition, you can clear the code using an OBDII scanner or by disconnecting the car's battery for a few minutes.
8. Can a faulty catalytic converter cause OBDII code P0174 in a 2004 Infiniti G35?
A failing catalytic converter can contribute to a lean condition and trigger the P0174 code, especially if it is clogged or not functioning efficiently.
9. Will the check engine light turn off automatically after fixing OBDII code P0174 in a 2004 Infiniti G35?
In most cases, the check engine light will turn off automatically after a successful repair and a few driving cycles where the issue does not reoccur.
10. How much does it typically cost to repair OBDII code P0174 in a 2004 Infiniti G35?
Repair costs can vary depending on the root cause, but they may range from $100 to $500 or more, including parts and labor.
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