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P1168 2008 Nissan Maxima Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code for a 2008 Nissan Maxima relates to the Closed Loop Control Function on Bank 2. Common causes include Faulty oxygen sensor on Bank 2, Clogged fuel injectors, Wiring or connector issues in the fuel control system. 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 2008 Nissan Maxima indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor on Bank 2, Clogged fuel injectors, Wiring or connector issues in the fuel control system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1168 2008 Nissan Maxima Description

The P1168 code for a 2008 Nissan Maxima relates to the Closed Loop Control Function on Bank 2. This code indicates a problem with the fuel control system on Bank 2 of the engine, specifically with the closed-loop control function. In modern fuel-injected vehicles, the engine control module (ECM) constantly monitors and adjusts the air-fuel mixture to ensure optimal combustion and performance. The closed-loop control function refers to the system's ability to adjust the fuel mixture based on feedback from sensors, such as the oxygen sensors.

OBDII Code P1168 2008 Nissan Maxima - Closed Loop Control Function Bank 2
P1168 2008 Nissan Maxima Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2008 Nissan Maxima

  1. Faulty oxygen sensor on Bank 2
  2. Clogged fuel injectors
  3. Wiring or connector issues in the fuel control system
  4. Vacuum leaks in the intake system
  5. Faulty ECM or engine control module

Symptoms of P1168 2008 Nissan Maxima

  1. Decreased fuel efficiency
  2. Engine hesitation or surging
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Reduced overall engine performance

How to Fix P1168 2008 Nissan Maxima

  1. Use a diagnostic scanner to read and clear the code.
  2. Perform a thorough inspection of the oxygen sensor on Bank 2 and replace if necessary.
  3. Check the fuel injectors for clogs or malfunctions and clean or replace as needed.
  4. Inspect the wiring and connectors in the fuel control system for any damage or corrosion and repair or replace as necessary.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not return.

Cost to Fix P1168 2008 Nissan Maxima

The cost to repair a P1168 code on a 2008 Nissan Maxima can vary depending on the specific cause of the issue. On average, the repair cost for this type of problem can range from $200 to $600, including parts and labor. However, it's important to keep in mind that labor rates and diagnostic fees can vary widely between different auto repair shops. It's recommended to get quotes from several reputable mechanics to find the best price for the necessary repairs.

When is the Code Detected?

The closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition, the closed loop control function for bank 2 does not operate even when vehicle is driving in the specified condition.

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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 P1168 2008 Nissan Maxima Code

1. What does OBDII code P1168 for a 2008 Nissan Maxima indicate?

This code, titled "Closed Loop Control Function Bank 2," indicates a problem with the closed loop control function on bank 2 of the engine.

2. What are some common symptoms of OBDII code P1168 on a 2008 Nissan Maxima?

Common symptoms include reduced fuel efficiency, rough idling, engine stalling, and the illumination of the Check Engine Light.

3. What are possible causes of OBDII code P1168 on a 2008 Nissan Maxima?

Possible causes include a faulty oxygen sensor, issues with the fuel system, a vacuum leak, or problems with the engine's computer system.

4. How can I diagnose the cause of OBDII code P1168 on my 2008 Nissan Maxima?

Diagnosis typically involves using an OBDII scanner to retrieve the specific code, then performing a visual inspection of the oxygen sensor, fuel system components, and vacuum hoses.

5. Can I still drive my 2008 Nissan Maxima with OBDII code P1168 present?

While the vehicle may still be operable with this code, it is recommended to address the issue promptly to prevent potential damage to the engine and ensure optimal performance.

6. How can I repair OBDII code P1168 on my 2008 Nissan Maxima?

Repairing this code may involve replacing a faulty oxygen sensor, addressing fuel system issues, fixing vacuum leaks, or reprogramming the engine control module.

7. Is it possible to reset OBDII code P1168 on a 2008 Nissan Maxima without making repairs?

While clearing the code with an OBDII scanner may temporarily turn off the Check Engine Light, the underlying issue causing the code will persist until properly addressed.

8. Will OBDII code P1168 on a 2008 Nissan Maxima cause emissions test failure?

Yes, this code may cause your vehicle to fail emissions testing, as it indicates a problem with the closed loop control function, which can impact the vehicle's emissions.

9. Are there any maintenance tips to prevent OBDII code P1168 on a 2008 Nissan Maxima?

Regularly scheduled maintenance, such as replacing oxygen sensors at recommended intervals and keeping the fuel system clean, can help prevent issues that may trigger this code.

10. How long does it typically take to repair OBDII code P1168 on a 2008 Nissan Maxima?

The repair time can vary depending on the specific cause of the code and the extent of the necessary repairs. It is advisable to consult a professional mechanic for an accurate estimate.

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