Engine-Codes - Infiniti - P1168 INFINITI

P1168 INFINITI - Closed Loop Control Function Bank 2

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1168 INFINITI Possible Causes

    For Models 2005 and up:
  • Faulty Air Fuel Ratio Sensor 1 Bank 2
  • Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted
  • Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection For Models before 2005:
  • Faulty Heated Oxygen Sensor 1 Bank 2
  • Heated Oxygen Sensor 1 Bank 2 harness is open or shorted
  • Heated Oxygen Sensor 1 Bank 2 circuit poor electrical connection

How is the P1168 INFINITI code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

There is a Factory Service Bulletin for the following Infiniti models:
2004-2005 Infiniti FX35 2WD
2004-2005 Infiniti FX35 4WD
2004-2005 Infiniti G35 Sedan 2WD
2004-2005 Infiniti G35 Sedan 4WD
Infiniti Factory Service Bulletin OBDII Code P1168

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

What is the cost to diagnose the P1168 INFINITI code

Labor: 1.0

The cost to diagnose the P1168 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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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.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1168 INFINITI Meaning

The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F)/Heated Oxygen Sensor 1 heater corresponding to the engine operating condition to keep the temperature of Air Fuel Ratio (A/F)/Heated Oxygen Sensor 1 element at the specified range.

More Information

Need more information on how to fix the P1168 INFINITI code?
Get Access to Factory Service Manuals

Information for specific Infiniti models

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