CEL P0171 (BANK 1) help

[focusSE2002]

i took a look at the engine today, noticed my oil pressure switch is leaking so im going to go ahead and replace that and hopefully it takes care of that flickering light

aside from that, i removed the airbox, opened the TB and noticed i had oil in my intake manifold, what could be the cause for this? PCV?

[sailor]

Replacing the switch would answer the question of whether it's faulty for some reason, but how about getting that shop to screw in a gauge & check the actual readings for you?

(I would assume you don't have a pressure gauge yourself)

SOME oil in the intake would be normal, as crankcase ventilation gets recycled & burned through the intake leaving a bit of a mess behind over time as some condenses on the walls (see sticky throttle plate for example). But a LOT of oil isn't a good sign....