P1168 2005 Nissan Maxima Code - Closed Loop Control Function Bank 2
Quick Answer
The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F) heater corresponding to the engine operating condition to keep the temperature of Air Fuel Ratio (A/F) element at the specified range. Common causes include Faulty Air Fuel Ratio Sensor 1 Bank 2, Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted, Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection. 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
- P1168 2005 Nissan Maxima indicates Closed Loop Control Function Bank 2.
- Common causes
- Common causes include Faulty Air Fuel Ratio Sensor 1 Bank 2, Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted, Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection.
- 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 P1168 2005 Nissan Maxima Description
What are the Possible Causes of the DTC P1168 2005 Nissan Maxima?
- Faulty Air Fuel Ratio Sensor 1 Bank 2
- Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted
- Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection
How to Fix the DTC P1168 2005 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1168 2005 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 P1168 2005 Nissan Maxima Code
1. What does the OBDII code P1168 mean for a 2005 Nissan Maxima?
P1168 indicates a problem with the "Closed Loop Control Function Bank 2," meaning the engine control module (ECM) is unable to properly control the air-fuel ratio for the second bank of cylinders.
2. What are the common symptoms of code P1168 in a 2005 Nissan Maxima?
Symptoms may include poor fuel economy, rough idling, hesitation during acceleration, reduced engine performance, and possibly an illuminated check engine light.
3. What causes the P1168 code to appear in a 2005 Nissan Maxima?
Common causes include a faulty oxygen sensor (Bank 2 Sensor 1), exhaust leaks, wiring or connector issues, or a malfunctioning fuel injector or mass airflow sensor.
4. Can a bad oxygen sensor trigger the P1168 code in a 2005 Nissan Maxima?
Yes, a failing oxygen sensor in Bank 2 Sensor 1 is one of the most common causes of this code.
5. How do I diagnose the P1168 code on a 2005 Nissan Maxima?
Start by scanning the ECM for codes, checking the oxygen sensor's voltage readings and wiring, inspecting for exhaust leaks, and ensuring the fuel injectors and mass airflow sensor are functioning properly.
6. Can I drive my 2005 Nissan Maxima with the P1168 code?
While the car may still be drivable, it’s not recommended as it could lead to poor fuel efficiency, increased emissions, and potential damage to other components.
7. How do I fix the P1168 code on a 2005 Nissan Maxima?
Repairs may include replacing the Bank 2 Sensor 1 oxygen sensor, repairing wiring issues, addressing exhaust leaks, cleaning or replacing the mass airflow sensor, or fixing fuel delivery problems.
8. How much does it cost to repair a P1168 code on a 2005 Nissan Maxima?
Repair costs vary but replacing an oxygen sensor typically costs $150–$400, while addressing exhaust leaks or other issues may increase costs.
9. Can a dirty mass airflow sensor cause the P1168 code on a 2005 Nissan Maxima?
Yes, a dirty or malfunctioning mass airflow sensor can disrupt the air-fuel ratio and trigger the P1168 code.
10. How do I prevent the P1168 code from recurring on my 2005 Nissan Maxima?
Regular maintenance, such as cleaning the mass airflow sensor, inspecting oxygen sensors, and addressing exhaust leaks promptly, can help prevent this code from recurring.
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