Originally posted by TronX:
What this means is that your Mass Airflow Sensor may have become contaminated. Rather than replacing the MAF as Ford recommends, I have always successfully cleaned MAFs with carb cleaner. If this doesn't work I guess you could always change the fuel filter...



WTH are you talking about, a CEL because of a fuel filter? Also if the MAF was dirty he would get PO171 system to bank 1, ONLY, he wouldnt get PO174 as well.

To the first poster ignore that post by TronX, he has no idea what is talking about.