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Engine-Codes – Nissan – P1168 2006 Nissan Altima Sedan

P1168 2006 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code for a 2006 Nissan Altima Sedan indicates an issue with the Closed Loop Control Function in Bank 2 of the vehicle's engine. Common causes include Faulty oxygen sensor, Vacuum leaks in the intake system, Issues with the fuel injectors. 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 2006 Nissan Altima Sedan indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Vacuum leaks in the intake system, Issues with the fuel injectors.
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 Aug 19, 2024
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Code P1168 2006 Nissan Altima Sedan Description

The P1168 code for a 2006 Nissan Altima Sedan indicates an issue with the Closed Loop Control Function in Bank 2 of the vehicle's engine. In a closed-loop system, the engine control module (ECM) monitors the air-fuel mixture in the exhaust system and adjusts it to maintain optimal fuel efficiency and reduce emissions. Bank 2 refers to the side of the engine that does not contain cylinder 1. When this system malfunctions, it can lead to a variety of performance issues and potential long-term effects on the vehicle's drivability.

OBDII Code P1168 2006 Nissan Altima Sedan - Closed Loop Control Function Bank 2
P1168 2006 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2006 Nissan Altima Sedan

  1. Faulty oxygen sensor
  2. Vacuum leaks in the intake system
  3. Issues with the fuel injectors
  4. Exhaust leaks
  5. Problems with the ECM or wiring connections

Symptoms of P1168 2006 Nissan Altima Sedan

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Check engine light illumination
  5. Reduced acceleration

How to Fix P1168 2006 Nissan Altima Sedan

  1. Diagnose the specific cause of the issue by using a scan tool to read live data and pinpoint the exact problem.
  2. Inspect and potentially replace the oxygen sensor in Bank 2.
  3. Check for vacuum leaks and repair or replace any damaged hoses.
  4. Test and clean the fuel injectors, or replace them if necessary.
  5. Inspect the exhaust system for leaks and repair as needed.

Cost to Fix P1168 2006 Nissan Altima Sedan

The typical repair costs for addressing the P1168 code in a 2006 Nissan Altima Sedan may range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to consider that prices can vary significantly based on location, the expertise of the auto repair shop, and the availability of parts. Be sure to obtain multiple quotes and compare prices before proceeding with the repair.

What does this mean?

Tech Notes for P1168 2006 Nissan Altima Sedan

There is a factory service bulletin for the 2006 Nissan Altima:

2006 Nissan Altima Factory Service Bulletin P1168 OBDII Code

Need more information about the P1168 2006 Nissan Altima Sedan code?

Need more information on how to fix the P1168 2006 Nissan Altima Sedan code? Get Access to Factory Service Manuals

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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 2006 Nissan Altima Sedan Code

1. What does OBDII code P1168 on a 2006 Nissan Altima Sedan indicate?

The code P1168 specifically refers to an issue with the Closed Loop Control Function on Bank 2 of the engine.

2. What are the common symptoms of OBDII code P1168 on a 2006 Nissan Altima Sedan?

Common symptoms may include poor fuel economy, rough idling, engine stalling, and potentially increased emissions.

3. What are some possible causes of OBDII code P1168 on a 2006 Nissan Altima Sedan?

Potential causes may include a faulty oxygen sensor, a vacuum leak, issues with the fuel system, or problems with the engine's air intake system.

4. How can I diagnose the OBDII code P1168 on my 2006 Nissan Altima Sedan?

Diagnosis typically involves using an OBDII scanner to read the code, checking the oxygen sensor's performance, inspecting for any vacuum leaks, and testing the fuel system components.

5. Can I continue driving my 2006 Nissan Altima Sedan with OBDII code P1168?

It is not recommended to ignore the code, as it can lead to poor engine performance and potentially cause further damage. It's best to address the issue promptly.

6. Is it safe to reset the OBDII code P1168 on a 2006 Nissan Altima Sedan?

Resetting the code without addressing the underlying issue is not a permanent solution. It's crucial to diagnose and fix the root cause of the problem to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code P1168 on a 2006 Nissan Altima Sedan?

The cost of repair can vary depending on the specific cause of the issue. It's advisable to consult a professional mechanic for an accurate diagnosis and repair estimate.

8. Can a DIY enthusiast fix OBDII code P1168 on a 2006 Nissan Altima Sedan?

While some aspects of the repair may be tackled by a skilled DIYer, diagnosing and fixing the root cause of the code may require specialized tools and expertise. Consulting a professional is recommended.

9. Will OBDII code P1168 cause my 2006 Nissan Altima Sedan to fail an emissions test?

Since the code relates to the Closed Loop Control Function, it may affect emissions levels. It is advisable to address the issue before undergoing an emissions test.

10. How can I prevent OBDII code P1168 from appearing on my 2006 Nissan Altima Sedan in the future?

Regular maintenance, such as changing the oxygen sensors at recommended intervals, ensuring proper fuel system operation, and promptly addressing any engine issues, can help prevent the recurrence of the code.

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