P1168 NISSAN 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 models before 2005:
- 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 NISSAN 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.
Possible Symptoms
- Engine Light On (or Service Engine Soon Warning Light)
P1168 NISSAN Meaning
The Engine Control Module (ECM) performs an ON/OFF operation check 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. The Diagnostic Trouble Code (DTC) is set when the closed-loop control function for Bank 1 does not operate even when the vehicle is driven under specified conditions, or the closed-loop control function for Bank 2 does not operate even when the vehicle is driven under the specified condition.