Closed Loop Control Function Bank 2
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P1168 INFINITI Possible Causes
- 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 do I fix code P1168 INFINITI?
Check 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.
Cost of diagnosing the P1168 INFINITI code
The cost of diagnosing the P1168 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
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 Description
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.