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Thread: P0171 Lean
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Old 03-23-2010, 12:56 PM
judoant judoant is offline
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Join Date: Aug 2005
Location: Lexington, KY
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judoant judoant is offline
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Join Date: Aug 2005
Location: Lexington, KY
Posts: 369
judoant is on a distinguished road
P0171 Lean
So i am getting the P0171 code. lean on bank 1. I have a 99 with 150k.

The MAF was replaced at about 85k and cleaned about 1 month ago. Could this be the issue again?

I have read several post about this code and I dont see any effective way of narrowing it down. I'd hate to buy $100 sensors not knowing if its going to fix it.
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99 4 Runner Limited. 3" Toytec Ultimate lift with SuperFlex rear coils. 231mm Tundra calipers. Rear diff breather extension. 285/75-16 Nitto Trail Grapplers. Savage full skids & sliders w/ kickout. ISR mod. LED gauges. Shrockworks front plate bumper w/ loop. 4xInnovations rear plate bumper.
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