The fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0456 code on Nissan vehicles.
All Nissan Models 2008 and newer Service Bulletin OBDII Code P0456:
All Nissan Models 2008 and newer Service Bulletin OBDII Code P0456
There is a factory Nissan service bulletin for the 2009 Nissan Altima Sedan:
2009 Nissan Altima Sedan Factory Service Bulletin OBDII Code P0456
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 P0456 2009 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.
Malfunction is detected when Evaporative Emission (EVAP) control system has a very small leak, EVAP control system does not operate properly.
Need more information on how to fix the P0456 2009 Nissan Altima Sedan code? Get Access to Factory Service Manuals
Get the P0456 2009 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area