GS - 3rd Gen (2006-2011) Discussion about the 2006+ model GS300, GS350, GS430, GS450H and GS460

p0171 and p0174 question

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Old 03-28-12, 08:15 AM
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Tdh01
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Default p0171 and p0174 question

i understand the trouble codes but there issomething i cant seem to figure out...
ive read about the hose that goes behind the airbox, the one that seems to come undone when filter is replaced.
i have installed an intake, but prior to that i have yet to find this hose. so im starting to wonder if i dont have a vaccum leak? can someone get me a picture of this hose and both ends?
i appreciate it in advance!!!
im holding off on buying a MAF sensor bc ive already cleaned it....
these codes come up about every 2-3 days but i dont drive very much either...
has been happening since i bought the car....
Old 03-28-12, 08:39 AM
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JSM1284
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could be Mass air flow sensor issue, especially with aftermarket intake.
Old 03-28-12, 05:47 PM
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Tdh01
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I was throwing the cels before intake was installed...
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