CEL again....

[Natedogg]

CEL went on on Thursday. Finally got to check it today, P0170 Fuel Trim Malfunction(Bank 1) We ran the code in the computer and it gave a list of things it could be. Where would be a good place to start though? It does start rough sometimes so I dont know if that could be a clue to the problem. Thanks

[Laserj]

Hmm fuel trim malfunction... Idk, must be a 2g obdII thing. I know the fuel trim adjust by the readings of the o2 sensor. It uses that to adjust the trims accordingly by richening, or leaning the mixture. Maybe something to do with o2 sensor, or along those lines?