P0171 2007 Nissan Maxima Code - Fuel Injection System Too Lean Bank 1
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
- P0171 2007 Nissan Maxima indicates Fuel Injection System Too Lean Bank 1.
- 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 P0171 2007 Nissan Maxima 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 P0171 2007 Nissan Maxima?
- 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 P0171 2007 Nissan Maxima?
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 P0171 2007 Nissan Maxima 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 P0171 2007 Nissan Maxima Code
1. What does OBDII code P0171 on a 2007 Nissan Maxima mean?
The code P0171 indicates that the fuel injection system on Bank 1 is too lean, meaning there is too much air and not enough fuel in the air-fuel mixture.
2. What are some common symptoms of OBDII code P0171 on a 2007 Nissan Maxima?
Common symptoms of code P0171 include rough idling, poor acceleration, engine misfires, and a decrease in fuel efficiency.
3. What are the possible causes of OBDII code P0171 on a 2007 Nissan Maxima?
Potential causes of code P0171 include a vacuum leak, faulty oxygen sensor, clogged fuel filter, fuel pump issues, or a malfunctioning mass airflow sensor.
4. How can I diagnose the cause of OBDII code P0171 on my 2007 Nissan Maxima?
Diagnosing the cause of code P0171 usually involves checking for vacuum leaks, inspecting the oxygen sensor, testing the fuel pressure, and examining the mass airflow sensor.
5. Can a dirty or clogged air filter trigger OBDII code P0171 on a 2007 Nissan Maxima?
Yes, a dirty or clogged air filter can disrupt the air-fuel mixture ratio and potentially trigger code P0171 on a 2007 Nissan Maxima.
6. Is it safe to continue driving my 2007 Nissan Maxima with OBDII code P0171?
It is not recommended to drive your vehicle with code P0171 present, as it can lead to engine damage and further issues if left unresolved.
7. How can I repair OBDII code P0171 on my 2007 Nissan Maxima?
Repairing code P0171 involves addressing the root cause, such as fixing vacuum leaks, replacing faulty sensors, cleaning or replacing the air filter, and ensuring proper fuel system function.
8. Can I reset the OBDII code P0171 on my 2007 Nissan Maxima using a diagnostic scanner?
Yes, you can reset the code using a diagnostic scanner, but it is important to address and fix the underlying issue causing code P0171 to prevent it from reoccurring.
9. Will code P0171 on a 2007 Nissan Maxima cause the check engine light to illuminate?
Yes, OBDII code P0171 typically triggers the check engine light to illuminate on the dashboard of a 2007 Nissan Maxima.
10. How much does it cost to repair OBDII code P0171 on a 2007 Nissan Maxima?
The cost to repair code P0171 can vary depending on the underlying issue and the specific components that need to be replaced. It is recommended to consult a mechanic for an accurate estimate.
Discuss the causes and fixes for P0171 2007 Nissan Maxima OBDII Code
-
Which sensor? It possible that the problem is not a sensor, but an intake leak.
-
already check:
- Intake air leaks
- Ignition misfiring
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection.And I still have the same problem, high RPM in Parking and 13 to 15 MPG. I just want discard - Faulty front heated oxygen sensor
-
The Air/Fuel Mixture Sensor (O2 Sensor) for the Bank 1 is on the back of the engine.
Also, try performing the Mixture Ratio Self-Learning Control Data: http://nissanhelp.com/diy/m...
and try reseting the idle air volume: http://nissanhelp.com/diy/m...
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