[Eng01]

I own a 2001 Prizm. The check engine light came on in DEc, 2004. I read the code as P0171, Fuel injection system lean. I cleared the code by removing the EFI fuse under the hood. I added a container of "Gas cleaner. All was OK until last week. Check engine light can on when I was driver on the high and accelerating. I smelled fuel. Checked the code at home and again it read P0171, Fuel injection system lean.
Does any one have any suggestion what the problem can be?

Help

Thanks