2005 Nissan Sentra Check Engine Light - Code 1440


#1

When filling the gas tank, the gas does not go constantly. Sometime the gas would “spew” back out of the nozzle. I took the car to AutoZone and the code came up 1440…auxiliary emission control??? The car is out of warrantly. Can anyone provide any feedback. The car is running fine.

Thanks!


#2

The code is telling you the charcoal canister is saturated and won’t accept any more fuel vapor.

FYI, saturated canisters are caused by constant fuel tank ‘topping off’.


#3

I made a mistake. The code is 1446. Is this the same thing? And what does “topping off” mean?


#4

In the past, when filling the tank, did you normally add more gas after the pump shut off?