P1168 INFINITI Possible Causes
For 2005 and later models:
- Faulty Air/Fuel Ratio Sensor 1, Bank 2
- Air/Fuel Ratio Sensor 1 Bank 2 harness is open or shorted
- Poor electrical connection in Air/Fuel Ratio Sensor 1 Bank 2 circuit
For pre-2005 models:
- Faulty Heated Oxygen Sensor 1, Bank 2
- Heated Oxygen Sensor 1 Bank 2 harness is open or shorted
- Poor electrical connection in Heated Oxygen Sensor 1 Bank 2 circuit
How to Fix P1168 INFINITI Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Technical Notes
2004-2005 Infiniti FX35 2WD
2004-2005 Infiniti FX35 4WD
2004-2005 Infiniti G35 Sedan 2WD
2004-2005 Infiniti G35 Sedan 4WD
When is the Code Detected?
The closed loop control function for Bank 1 does not operate even when the vehicle is running under specified conditions, the closed loop control function for Bank 2 does not operate even when the vehicle is running under specified conditions.
Possible Symptoms
- Engine Light On (or Service Engine Soon Warning Light)
P1168 INFINITI Meaning
The Engine Control Module (ECM) performs ON/OFF operation control of the Air/Fuel Ratio (A/F) sensor heater/Heated Oxygen Sensor 1 corresponding to the engine operating condition to maintain the Air/Fuel Ratio (A/F) sensor/Heated Oxygen Sensor 1 element temperature within the specified range.