I have a 2001 Tahoe 5.3 z71 and my service engine soon light came on I had it scan and a random misfire code came up. My mechanic recommended installing new plugs and wires which I did. The light went out but now it reappeared with code po174 lean bank 2. The truck drives but I want to solve...
my 2003 escaladeis setting 3 codes po101 po171 po174 is maf po101 setting off the 02 sensors also also it will idle rough at times or even die at timesat low idle
I have a 2002 BMW 330 with a check engine light that goes on and off. The codes are PO113, PO171 and PO174 in that order. I also just had my valve cover gasket replaced that was leaking, not that they have anything to do with one another? Any ideas on what is causing this. Fuel pressure...