Engine-Codes.com
Engine-Codes – Nissan – P1168 2002 Nissan Altima Sedan

P1168 2002 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code in a 2002 Nissan Altima Sedan refers to an issue with the Closed Loop Control Function Bank 2. Common causes include Faulty oxygen sensor, Vacuum leak in Bank 2, Malfunctioning mass airflow sensor. 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 2002 Nissan Altima Sedan indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Vacuum leak in Bank 2, Malfunctioning mass airflow sensor.
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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1168 2002 Nissan Altima Sedan Description

The P1168 code in a 2002 Nissan Altima Sedan refers to an issue with the Closed Loop Control Function Bank 2. In a modern fuel-injected engine, closed-loop control is a system that uses feedback from oxygen sensors to adjust the air-fuel mixture in real-time, ensuring optimal combustion efficiency. Bank 2 typically refers to the side of the engine that does not contain the number one cylinder.

OBDII Code P1168 2002 Nissan Altima Sedan - Closed Loop Control Function Bank 2
P1168 2002 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2002 Nissan Altima Sedan

  1. Faulty oxygen sensor
  2. Vacuum leak in Bank 2
  3. Malfunctioning mass airflow sensor
  4. Clogged fuel injectors
  5. ECM malfunction

Symptoms of P1168 2002 Nissan Altima Sedan

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine hesitation or misfiring
  4. Check Engine Light illuminated
  5. Failed emissions test

How to Fix P1168 2002 Nissan Altima Sedan

  1. Diagnose the issue by using a scan tool to read the code and identify the specific problem area.
  2. Inspect Bank 2 oxygen sensor and replace if faulty.
  3. Check for vacuum leaks in Bank 2 and repair as needed.
  4. Test the mass airflow sensor and replace if necessary.
  5. Clean or replace clogged fuel injectors.
  6. If the issue persists, inspect and potentially replace the ECM.

Cost to Fix P1168 2002 Nissan Altima Sedan

The typical repair costs for addressing a P1168 code in a 2002 Nissan Altima Sedan can range from $200 to $800, depending on the specific cause of the issue. This estimate includes parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It is advisable to check with local shops for a more accurate estimate.

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.

Need more information about the P1168 2002 Nissan Altima Sedan code?

Need more information on how to fix the P1168 2002 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1168 2002 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

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 2002 Nissan Altima Sedan Code

1. What does OBDII code P1168 on a 2002 Nissan Altima Sedan mean?

- P1168 indicates an issue with the Closed Loop Control Function on Bank 2 of the engine.

2. What are the common symptoms of OBDII code P1168 in a 2002 Nissan Altima Sedan?

- Common symptoms include poor engine performance, reduced fuel efficiency, and possible stalling.

3. What are the possible causes of OBDII code P1168 on a 2002 Nissan Altima Sedan?

- Causes can include a faulty oxygen sensor, issues with the fuel system, vacuum leaks, or problems with the engine control module.

4. How can I diagnose the OBDII code P1168 on my 2002 Nissan Altima Sedan?

- Diagnostic steps may involve checking the oxygen sensor, inspecting for vacuum leaks, testing the fuel system, and scanning the engine control module for faults.

5. Can I drive my 2002 Nissan Altima Sedan with OBDII code P1168?

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

6. How do I repair OBDII code P1168 on my 2002 Nissan Altima Sedan?

- Repair may involve replacing the faulty oxygen sensor, repairing vacuum leaks, addressing fuel system issues, or reprogramming the engine control module.

7. Is it possible to reset OBDII code P1168 on a 2002 Nissan Altima Sedan without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause is identified and repaired.

8. Will OBDII code P1168 on a 2002 Nissan Altima Sedan cause the check engine light to illuminate?

- Yes, P1168 typically triggers the check engine light to alert you to a problem with the Closed Loop Control Function on Bank 2.

9. How long does it take to fix OBDII code P1168 on a 2002 Nissan Altima Sedan?

- The repair time can vary depending on the specific cause of the code, but it may take a few hours to a full day for diagnosis and repair.

10. Can a DIY enthusiast address OBDII code P1168 on a 2002 Nissan Altima Sedan?

- Depending on your skill level and access to tools, some DIYers may be able to diagnose and repair the issue themselves, especially if it involves replacing components like the oxygen sensor.

Discuss the causes and fixes for P1168 2002 Nissan Altima Sedan OBDII Code

Submit a New Comment

Code P1168 2002 Nissan Altima Sedan comments

No comments found for this page.