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P1168 2004 Infiniti G35 Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code on a 2004 Infiniti G35 specifically refers to an issue with the Closed Loop Control Function on Bank 2. Common causes include Faulty oxygen sensor, Vacuum leak in the intake system, Clogged 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 2004 Infiniti G35 indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Vacuum leak in the intake system, Clogged 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 Sep 17, 2024
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Code P1168 2004 Infiniti G35 Description

The P1168 code on a 2004 Infiniti G35 specifically refers to an issue with the Closed Loop Control Function on Bank 2. In an automotive context, the term "closed loop" refers to a system where feedback is used to control a process. In this case, the closed loop control function on Bank 2 is responsible for monitoring and adjusting the air-fuel mixture to ensure optimal combustion in the engine.

OBDII Code P1168 2004 Infiniti G35 - Closed Loop Control Function Bank 2
P1168 2004 Infiniti G35 Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2004 Infiniti G35

  1. Faulty oxygen sensor
  2. Vacuum leak in the intake system
  3. Clogged fuel injectors
  4. Issues with the engine control module
  5. Wiring or electrical problems

Symptoms of P1168 2004 Infiniti G35

  1. Rough idling or stalling
  2. Decreased fuel efficiency
  3. Engine misfires
  4. Difficulty starting the vehicle
  5. Increased emissions

How to Fix P1168 2004 Infiniti G35

  1. Diagnose the specific cause of the issue by using a scan tool to read the code and perform further testing on the oxygen sensor, intake system, fuel injectors, and engine control module.
  2. Replace the faulty oxygen sensor if it is determined to be the cause of the problem.
  3. Repair any vacuum leaks in the intake system and clean or replace clogged fuel injectors.
  4. Check and repair any wiring or electrical issues that may be affecting the closed loop control function on Bank 2.
  5. Clear the code and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1168 2004 Infiniti G35

The typical repair costs for addressing a P1168 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. In general, replacing a faulty oxygen sensor can cost between $200 and $300, while repairing vacuum leaks or cleaning fuel injectors may range from $100 to $500. The total cost, including parts and labor, could be anywhere from $300 to $800 or more. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P1168 2004 Infiniti G35

There is a Factory Service Bulletin for the 2004 Infiniti G35:

2004 Infiniti G35 Factory Service Bulletin OBDII Code P1168



The bulletin suggests reprogramming the Engine Control Module (ECM) first before replacing any parts.

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 2004 Infiniti G35 code?

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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 2004 Infiniti G35 Code

1. What does OBDII code P1168 on a 2004 Infiniti G35 mean?

This code 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 on a 2004 Infiniti G35?

Common symptoms include poor engine performance, decreased fuel efficiency, and potentially rough idling.

3. What are the possible causes of OBDII code P1168 on a 2004 Infiniti G35?

Common causes may include 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 source of OBDII code P1168 on a 2004 Infiniti G35?

Diagnosing this code typically involves using a scan tool to check for any related trouble codes, inspecting the oxygen sensors, and performing a thorough inspection of the engine components.

5. Can I drive my 2004 Infiniti G35 with OBDII code P1168?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and reduced performance.

6. How can I repair OBDII code P1168 on my 2004 Infiniti G35?

Repairing this code often involves replacing the faulty oxygen sensor, addressing any issues with the fuel system, and fixing any vacuum leaks or intake system problems.

7. Is it safe to reset the OBDII code P1168 on a 2004 Infiniti G35 without fixing the underlying issue?

Resetting the code without fixing the problem may temporarily turn off the check engine light, but the issue will likely reoccur and could lead to more significant problems.

8. How much does it cost to repair OBDII code P1168 on a 2004 Infiniti G35?

The cost of repairs can vary depending on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P1168 on a 2004 Infiniti G35?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code themselves, especially if it involves simple fixes like replacing an oxygen sensor.

10. How often does OBDII code P1168 occur in 2004 Infiniti G35 vehicles?

While the frequency of this specific code may vary, it is not uncommon for Infiniti G35 models of that year to experience closed-loop control function issues on bank 2.

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