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P1168 2006 Infiniti G35 Code - Closed Loop Control Function Bank 2

Quick Answer

The P1168 code in a 2006 Infiniti G35 indicates a problem with the closed-loop control function on bank 2 of the engine. Common causes include Faulty oxygen sensor on bank 2, Wiring or connector issues in the oxygen sensor circuit, 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 2006 Infiniti G35 indicates Closed Loop Control Function Bank 2.
Common causes
Common causes include Faulty oxygen sensor on bank 2, Wiring or connector issues in the oxygen sensor circuit, 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 2006 Infiniti G35 Description

The P1168 code in a 2006 Infiniti G35 indicates a problem with the closed-loop control function on bank 2 of the engine. In modern vehicles, the engine control module (ECM) constantly monitors various sensors to adjust the air-fuel mixture for optimal combustion. The closed-loop control system uses feedback from oxygen sensors to fine-tune this mixture. Bank 2 refers to the side of the engine where the number 2 cylinder is located.

OBDII Code P1168 2006 Infiniti G35 - Closed Loop Control Function Bank 2
P1168 2006 Infiniti G35 Code - Closed Loop Control Function Bank 2

Common Causes of P1168 2006 Infiniti G35

  1. Faulty oxygen sensor on bank 2
  2. Wiring or connector issues in the oxygen sensor circuit
  3. Vacuum leaks in the intake system
  4. Exhaust leaks near the oxygen sensor
  5. Issues with the ECM or engine control system

Symptoms of P1168 2006 Infiniti G35

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Check Engine Light illuminated
  5. Reduced overall performance

How to Fix P1168 2006 Infiniti G35

  1. Use an OBD-II scanner to confirm the P1168 code and diagnose the specific issue.
  2. Inspect the oxygen sensor on bank 2 for any damage or contamination and replace if necessary.
  3. Check the wiring and connectors in the oxygen sensor circuit for any breaks or corrosion and repair as needed.
  4. Inspect the intake system for vacuum leaks and repair or replace any damaged components.
  5. Clear the code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1168 2006 Infiniti G35

The cost of repairing a P1168 code on a 2006 Infiniti G35 can vary depending on the specific cause of the issue. In general, replacing an oxygen sensor can cost between $200 and $400, including parts and labor. If wiring or connector repairs are needed, additional costs may apply. It's important to factor in diagnostic time and labor rates, which can vary between auto repair shops. It's recommended to consult with a professional mechanic for a more accurate cost estimate based on the specific circumstances of your vehicle.

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 2006 Infiniti G35 Code

1. What does the OBDII code P1168 on a 2006 Infiniti G35 related to Closed Loop Control Function Bank 2 indicate?

This code indicates a fault in the closed loop control function of Bank 2, which is typically related to the air/fuel mixture being outside the optimal range.

2. What are common symptoms of OBDII code P1168 on a 2006 Infiniti G35?

Common symptoms include poor fuel efficiency, rough idling, hesitation or stalling during acceleration, and the illumination of the Check Engine Light.

3. What are possible causes of OBDII code P1168 on a 2006 Infiniti G35?

Possible causes include a faulty oxygen sensor, a vacuum leak, a problem with the fuel pressure regulator, issues with the fuel injectors, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P1168 on a 2006 Infiniti G35?

Diagnosis typically involves using an OBDII scanner to read the code, checking freeze frame data for additional clues, inspecting the oxygen sensors and related components, and performing a thorough visual inspection of the engine bay.

5. Can I still drive my 2006 Infiniti G35 with the OBDII code P1168 present?

It is generally not recommended to drive with this code present, as it can lead to decreased fuel efficiency and potential engine damage if left unresolved.

6. What are some repair tips for fixing OBDII code P1168 on a 2006 Infiniti G35?

Repair tips include checking and replacing faulty oxygen sensors, addressing any vacuum leaks, testing and potentially replacing the fuel pressure regulator, and ensuring the fuel injectors are functioning properly.

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

8. Can a DIY enthusiast fix the OBDII code P1168 on a 2006 Infiniti G35?

While some individuals with mechanical knowledge may be able to address certain causes of this code, complex diagnostics and repairs are best left to experienced professionals.

9. How long does it take to repair OBDII code P1168 on a 2006 Infiniti G35?

The repair time can vary based on the specific cause of the code and the availability of parts, but it may take anywhere from a few hours to a full day to complete the repairs.

10. Will resetting the trouble codes make the OBDII code P1168 go away permanently on a 2006 Infiniti G35?

Resetting the codes may temporarily turn off the Check Engine Light, but if the underlying issue causing the P1168 code is not addressed, it is likely to reappear after driving the vehicle for some time.

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