Help Me Diagnose Mil To Pass Smog! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Rabboni · 09-20-2009, 06:19 PM

So i bought my s14 zenki from a guy i thought was my friend a couple of months ago. He said it would pass smog but it wont because the mil is on and wont go off. These are the codes I'm getting

P1141-Vacuum cut valve bypass valve
P0505-Idle air control system
P0443-Evap emissions system
P0446-Evap emissions vent control circuit
P1105-Map/Baro pressure switch solenoid valve

Its throwing a few others that come back after a long drive, but these 5 wont clear even right after i clear them with my scanner. Ive tested all the components and found them to be good, so i'm guessing its a curcuit fault. Does anyone know a common circuit power or ground for all of these components, or has anyone experienced this problem that can help me. You guys are my last hope before i give up and take it to a shop, cause registration was up 3 months ago an this is still my daily driver. Any input is appreciated, and thanks.

NINJASPY · 09-20-2009, 06:26 PM

check all vacuum lines, I had similar problem, 3-4codes poped so I replaced a vacuum line on the back of the manifold, it was a L shaped line and was kinked at the bend. Replaced it and all 3 codes were cleared.

09-20-2009, 06:19 PM	#1
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	Help Me Diagnose Mil To Pass Smog! So i bought my s14 zenki from a guy i thought was my friend a couple of months ago. He said it would pass smog but it wont because the mil is on and wont go off. These are the codes I'm getting P1141-Vacuum cut valve bypass valve P0505-Idle air control system P0443-Evap emissions system P0446-Evap emissions vent control circuit P1105-Map/Baro pressure switch solenoid valve Its throwing a few others that come back after a long drive, but these 5 wont clear even right after i clear them with my scanner. Ive tested all the components and found them to be good, so i'm guessing its a curcuit fault. Does anyone know a common circuit power or ground for all of these components, or has anyone experienced this problem that can help me. You guys are my last hope before i give up and take it to a shop, cause registration was up 3 months ago an this is still my daily driver. Any input is appreciated, and thanks.

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09-20-2009, 06:26 PM	#2
NINJASPY Zilvia FREAK! Join Date: Oct 2007 Location: So-cal Los Angeles 626 Age: 40 Posts: 1,009 Trader Rating: (13) Feedback Score: 13 reviews	check all vacuum lines, I had similar problem, 3-4codes poped so I replaced a vacuum line on the back of the manifold, it was a L shaped line and was kinked at the bend. Replaced it and all 3 codes were cleared.