P0174 System Too Lean Bank 2 Ford Explorer: Vacuum Leak Diagnosis and Complete Fix Guide
P0174 on a Ford Explorer means the ECM has detected that the air-fuel mixture on Bank 2 (the passenger side of the engine) is running lean: there is too much air or too little fuel: and the most common cause on Explorer trucks is a cracked or disconnected PCV hose, an intake manifold gasket leak, […]