Question

Is Bank 2 on the driver or passenger side of the engine on my 1998 Ford Expedition 5.4L? I got the engine code P0174

Answer 1

P0174 Fuel trim lean Bank 2

There is Bank 1 and Bank 2, Find the closet cylinder to you as you stand in front on the engine with the main engine pulley facing you. use the ignition coil as a refference. There is one one each bank the ignition coil that is closet to you is Bank 1 (or the number 1 cylinder) the other side will be Bank 2.In this diagram cylinder 5,6,7,8 is Bank2. As for the code condition P0174 worn or loose sparkplug can and do cause lean conditions as do vacuum leaks

Answer 2

P0174 FORD Code - Fuel Injection System Too Lean Bank 2

Read more: https://www.autocodes.com/p0174_ford.html