There is a factory service bulletin for the 2005 Nissan Altima:
2005 Nissan Altima Factory Service Bulletin P1168 OBDII Code
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 pins.
The cost to diagnose the P1168 2005 Nissan Altima Sedan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F) heater corresponding to the engine operating condition to keep the temperature of the Air Fuel Ratio (A/F) element at the specified range. The Diagnostic Trouble Code (DTC) will set when the closed-loop control function for bank 1 does not operate even when the 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.
Need more information on how to fix the P1168 2005 Nissan Altima Sedan code? Get Access to Factory Service Manuals
Get the P1168 2005 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area