P0171 2005 Infiniti G35 Code - Fuel Injection System Too Lean Bank 1
Quick Answer
The OBD-II trouble code P0171 in a 2005 Infiniti G35 indicates that the fuel injection system on bank 1 is running too lean. Common causes include Vacuum leak in the intake system, Faulty mass airflow sensor, Clogged fuel filter. 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
- P0171 2005 Infiniti G35 indicates Fuel Injection System Too Lean Bank 1.
- Common causes
- Common causes include Vacuum leak in the intake system, Faulty mass airflow sensor, Clogged fuel filter.
- 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 P0171 2005 Infiniti G35 Description
The OBD-II trouble code P0171 in a 2005 Infiniti G35 indicates that the fuel injection system on bank 1 is running too lean. This means that there is an imbalance in the air-fuel mixture being delivered to the engine, with more air than fuel present. The Engine Control Module (ECM) monitors the air-fuel ratio using oxygen sensors and adjusts the mixture accordingly. When the ECM detects that the mixture is too lean, it triggers the P0171 code.
Common Causes of P0171 2005 Infiniti G35
- Vacuum leak in the intake system
- Faulty mass airflow sensor
- Clogged fuel filter
- Malfunctioning fuel injector
- Faulty oxygen sensor
Symptoms of P0171 2005 Infiniti G35
- Reduced engine power
- Rough idling or stalling
- Poor acceleration
- Increased fuel consumption
- Engine running hotter than normal
How to Fix P0171 2005 Infiniti G35
- Perform a thorough inspection of the intake system for any vacuum leaks and repair as necessary.
- Test and, if needed, replace the mass airflow sensor.
- Check and replace the fuel filter if it is clogged.
- Inspect the fuel injectors for proper function and clean or replace as needed.
- Test the oxygen sensor and replace if it is faulty.
Cost to Fix P0171 2005 Infiniti G35
** The cost of repairing the P0171 code on a 2005 Infiniti G35 can vary depending on the specific cause of the lean condition. On average, the parts needed for the repair, such as a mass airflow sensor, fuel filter, fuel injectors, or oxygen sensor, can range from $50 to $300 each. Labor costs can range from $100 to $300 per hour, and the total repair bill may amount to $200 to $800 or more, depending on the extent of the repairs needed.
Tech Notes for P0171 2005 Infiniti G35
When is the Code Detected?
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)
Need more information about the P0171 2005 Infiniti G35 code?
Need more information on how to fix the P0171 2005 Infiniti G35 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0171 2005 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0171 2005 Infiniti G35 Code
1. What does OBDII code P0171 mean for a 2005 Infiniti G35?
Code P0171 indicates that the fuel injection system on Bank 1 is running too lean, meaning there is an imbalance in the air-fuel mixture.
2. What are the common symptoms of OBDII code P0171 on a 2005 Infiniti G35?
Common symptoms include rough idling, poor acceleration, engine hesitation, and possibly a decrease in fuel efficiency.
3. What are the potential causes of OBDII code P0171 on a 2005 Infiniti G35?
Possible causes include a vacuum leak, faulty oxygen sensor, clogged fuel injectors, intake air leaks, or a malfunctioning mass airflow sensor.
4. How can I diagnose the OBDII code P0171 on my 2005 Infiniti G35?
Diagnosis typically involves checking for vacuum leaks, inspecting the oxygen sensor, testing the fuel injectors, examining the intake system for leaks, and verifying the mass airflow sensor's operation.
5. Can a dirty air filter trigger OBDII code P0171 on a 2005 Infiniti G35?
Yes, a dirty air filter can disrupt the air-fuel mixture ratio and lead to a lean condition, potentially triggering code P0171.
6. Is it safe to continue driving with OBDII code P0171 on a 2005 Infiniti G35?
Continuing to drive with code P0171 may cause damage to the engine over time and result in decreased performance. It is recommended to address the issue promptly.
7. How can I reset OBDII code P0171 on my 2005 Infiniti G35?
Resetting the code can be done using an OBDII scanner tool after addressing the underlying issue that triggered the code.
8. Will OBDII code P0171 on a 2005 Infiniti G35 affect emissions testing?
Yes, code P0171 can cause the vehicle to fail emissions testing due to its impact on the fuel system and emissions output.
9. Are there any DIY repair tips for fixing OBDII code P0171 on a 2005 Infiniti G35?
DIY repair tips include checking for visible leaks, cleaning or replacing the air filter, inspecting the oxygen sensor, and ensuring proper fuel injector function.
10. Should I seek professional help for OBDII code P0171 on my 2005 Infiniti G35?
If you are unsure about diagnosing or repairing the issue causing code P0171, it is recommended to seek help from a qualified mechanic to properly address the problem.
Discuss the causes and fixes for P0171 2005 Infiniti G35 OBDII Code
Code P0171 2005 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.