Causes and Fixes Ford P0174 Code: System Too Lean Bank 2

How to fix a Ford P0174 engine code: Fuel Injection System Too Lean Bank 2

A lean condition exists if the engine is getting more air than fuel in the cylinders. (Air/Fuel Ratio is off)
P0174 Code is problematic code since it can be caused by several things.
Ford vehicles with V6 or V8 engines, Bank-2 is on the Driver side. A 4 Cylinder has only Bank-1.

Possible Causes of a Ford P0174 Code:
⦁ Oxygen Sensor (Bank 2 Sensor 1)
⦁ Mas Air Flow Sensor (Codes P0100, P0101, P0102, P0103, P0104)
⦁ Clogged Fuel Filter
⦁ Fuel Pressure Regulator
⦁ Weak Fuel Pump
⦁ Vacuum Leak
⦁ Bad Fuel Injector
⦁ DPFE (Differential Pressure Feedback Sensor) (P0401 code)

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