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P1168 2008 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code in a 2008 Nissan Altima Sedan indicates an issue with the Closed Loop Control Function on Bank 2 of the engine. Common causes include Faulty oxygen sensor on Bank 2, Wiring issues or poor connections, Vacuum leaks in the intake 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 Altima Sedan indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor on Bank 2, Wiring issues or poor connections, Vacuum leaks in the intake 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 17, 2024
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Code P1168 2008 Nissan Altima Sedan Description

The P1168 code in a 2008 Nissan Altima Sedan indicates an issue with the Closed Loop Control Function on Bank 2 of the engine. In a closed-loop system, the engine control module (ECM) constantly monitors and adjusts the air-fuel mixture to maintain optimal combustion efficiency. Bank 2 refers to the side of the engine that does not contain the number one cylinder. This code specifically points to a problem with the oxygen sensor feedback on Bank 2, which is crucial for the ECM to adjust the fuel delivery accurately.

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

Common Causes of P1168 2008 Nissan Altima Sedan

  1. Faulty oxygen sensor on Bank 2
  2. Wiring issues or poor connections
  3. Vacuum leaks in the intake system
  4. ECM malfunction
  5. Exhaust leaks near the oxygen sensor

Symptoms of P1168 2008 Nissan Altima Sedan

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or lack of power during acceleration
  4. Increased emissions
  5. Check Engine Light illuminated

How to Fix P1168 2008 Nissan Altima Sedan

  1. Use an OBD-II scanner to confirm the P1168 code and diagnose the specific cause.
  2. Inspect the oxygen sensor on Bank 2 for any visible damage or contamination.
  3. Check the wiring and connections leading to the oxygen sensor for any breaks or corrosion.
  4. Perform a smoke test to check for vacuum leaks in the intake system.
  5. If necessary, replace the oxygen sensor, repair any wiring issues, or address any other identified problems.

Cost to Fix P1168 2008 Nissan Altima Sedan

The cost of repairing a P1168 code on a 2008 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing an oxygen sensor can cost between $200 and $300, including parts and labor. However, if additional repairs or diagnostic work are needed, the total cost could be higher. It's recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's specific needs. Keep in mind that labor rates can vary, so it's advisable to inquire about rates in your area before proceeding with the repair.

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 Altima Sedan Code

1. What does OBDII code P1168 on a 2008 Nissan Altima Sedan mean?

- OBDII code P1168 indicates an issue with the Closed Loop Control Function Bank 2 in the engine's fuel system.

2. What are the common symptoms of a P1168 code in a 2008 Nissan Altima Sedan?

- Common symptoms include decreased fuel efficiency, rough idling, engine misfires, and in some cases, the Check Engine light may illuminate.

3. What are the possible causes of a P1168 code in a 2008 Nissan Altima Sedan?

- Causes may include a faulty oxygen sensor, a vacuum leak, issues with the fuel pressure regulator, or problems with the fuel injectors.

4. How can I diagnose a P1168 code in my 2008 Nissan Altima Sedan?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor, checking for vacuum leaks, and testing the fuel pressure regulator.

5. Can I drive my 2008 Nissan Altima Sedan with a P1168 code?

- It is not recommended to drive with a P1168 code as it can lead to poor engine performance and potentially cause further damage to the vehicle.

6. How serious is a P1168 code in a 2008 Nissan Altima Sedan?

- While the severity can vary, it is important to address a P1168 code promptly to prevent long-term damage to the engine and ensure optimal vehicle performance.

7. How much does it typically cost to repair a P1168 code in a 2008 Nissan Altima Sedan?

- The cost of repairs can vary depending on the exact cause of the code, but it may range from $200 to $600 or more, including parts and labor.

8. Can I fix a P1168 code in my 2008 Nissan Altima Sedan myself?

- Depending on your mechanical skills and access to tools, some DIY enthusiasts may be able to address a P1168 code themselves. However, it's recommended to consult a professional mechanic for accurate diagnosis and repair.

9. Are there any DIY tips for addressing a P1168 code in a 2008 Nissan Altima Sedan?

- DIY tips may include checking for visible signs of damage or wear on the oxygen sensor, inspecting vacuum hoses for leaks, and ensuring proper fuel system maintenance.

10. How can I prevent a P1168 code from recurring in my 2008 Nissan Altima Sedan?

- Regular maintenance, such as timely replacement of oxygen sensors, checking for vacuum leaks, and using high-quality fuel, can help prevent the recurrence of a P1168 code.

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