Engine-CodesInfiniti – P1168 2003 Infiniti G35

P1168 2003 Infiniti G35 Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code in a 2003 Infiniti G35 indicates an issue with the closed-loop control function on bank 2 of the engine. Common causes include Malfunctioning oxygen sensor, Vacuum leak, Faulty 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 2003 Infiniti G35 indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Malfunctioning oxygen sensor, Vacuum leak, Faulty 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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1168 2003 Infiniti G35 Description

The P1168 code in a 2003 Infiniti G35 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) continuously 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 1 cylinder.

OBDII Code P1168 2003 Infiniti G35 - Closed Loop Control Function Bank 2
P1168 2003 Infiniti G35 Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2003 Infiniti G35

  1. Malfunctioning oxygen sensor
  2. Vacuum leak
  3. Faulty mass airflow sensor
  4. Clogged fuel injectors
  5. Wiring issues

Symptoms of P1168 2003 Infiniti G35

  1. Rough idling
  2. Hesitation during acceleration
  3. Reduced fuel efficiency
  4. Engine stalling
  5. Check Engine Light illuminated

How to Fix P1168 2003 Infiniti G35

  1. Use an OBD-II scanner to confirm the P1168 code and diagnose the specific issue.
  2. Inspect the oxygen sensor, mass airflow sensor, and fuel injectors for any signs of damage or malfunction.
  3. Check for vacuum leaks and repair or replace any damaged hoses.
  4. Clear the code from the ECM's memory and reset the system.
  5. Test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1168 2003 Infiniti G35

The cost of repairing a P1168 code in a 2003 Infiniti G35 can vary depending on the specific cause of the issue. On average, the repair costs can range from $200 to $500, including parts and labor. However, it's essential to note that the actual cost may be higher or lower based on the location, the auto repair shop's labor rates, and the extent of the repairs needed. It's recommended to consult with a professional mechanic 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.

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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 2003 Infiniti G35 Code

1. What does OBDII code P1168 on a 2003 Infiniti G35 mean?

The code P1168 in a 2003 Infiniti G35 indicates an issue with the Closed Loop Control Function Bank 2.

2. What are the common symptoms of OBDII code P1168 in a 2003 Infiniti G35?

Common symptoms of code P1168 may include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

3. What are the possible causes of OBDII code P1168 on a 2003 Infiniti G35?

Potential causes of code P1168 can be a faulty oxygen sensor, issues with the fuel system, vacuum leaks, or problems with the engine's air intake system.

4. How can I diagnose the OBDII code P1168 on my 2003 Infiniti G35?

To diagnose code P1168, it is recommended to use an OBDII scanner to retrieve the specific error code, check the oxygen sensors, inspect the fuel system, and look for any vacuum leaks.

5. How can I repair OBDII code P1168 on my 2003 Infiniti G35?

Repairing code P1168 may involve replacing a faulty oxygen sensor, fixing issues in the fuel system, repairing any vacuum leaks, or addressing problems in the air intake system.

6. Can I continue driving my 2003 Infiniti G35 with OBDII code P1168?

It is not recommended to continue driving your vehicle with an unresolved OBDII code like P1168, as it can lead to further damage and potential safety hazards.

7. How much does it cost to fix OBDII code P1168 on a 2003 Infiniti G35?

The cost of fixing code P1168 can vary depending on the specific cause of the issue, but it may involve parts replacement and labor costs that can range from a few hundred to over a thousand dollars.

8. Will resetting the OBDII code P1168 on my 2003 Infiniti G35 make it go away permanently?

Simply resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue causing code P1168 is not addressed, the code is likely to reappear.

9. How long does it take to repair OBDII code P1168 on a 2003 Infiniti G35?

The repair time for code P1168 can vary based on the extent of the issue and the specific repairs needed, but it can typically take a few hours to a full day at a repair shop.

10. Can a DIY enthusiast fix OBDII code P1168 on a 2003 Infiniti G35?

Depending on your skills and experience with automotive repairs, some aspects of fixing code P1168 may be DIY-friendly, but complex issues or parts replacement may require professional assistance.

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