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 -
Answer 1
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 -
Answer 2
System too lean bank one and two, likley vacuum leak. -
Answer 3
Think intake manifold o-rings...if it's a 4.0L SOHC engine. -
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