1999 Ford Explorer Q&A
1999 Ford Explorer Question: What is code PO174 and PO171?
CHECK ENGINE light comes on. When this happens I get code(s)PO171 andPO174 - Visitor
OBD II Code P0171 and P0174 = Fuel System Too Lean (Bank 1 or 2). There is very nice information about these codes in the RepairPal Encyclopedia; http://repairpal.com/OBD-II-Code-P0171-and-P0174 - fernando
System too lean bank one and two, likley vacuum leak. - todays tech
Think intake manifold o-rings...if it's a 4.0L SOHC engine. - DaveJHM
now i have OBD codes of PO171,PO174,PO304
My check engine light is on. I've been told what the codes are that could be problem. I am on a budget, but, think I need to just replace EGR Solenoid to fix it. Here are the codes: PO732 Gear 2...