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Discussion Starter · #1 ·
So every time it rains or there is a humid day I get P2196 sensor signal biased stuck rich bank 1 sensor 1. I usually just reflash my access port stage 3 map 93 oct. Anyone else have this issue, any idea what it could be? The aAFR goes to like 9.5 at idle when this happens and i get alot of poping from the exhaust on a down shift. Could it be MAF related? or ecu? or vacuum leak? Also everytime I top of my tank with gas the car almost stalls the first time i start it.
 

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Hey I'm a bit late to reply but i am having the same issue. Any updates? been thinking it has to do with the evap system but no codes show up for it. and BTW the part number for the purge valve is BV6Z-9D289-E if you still need it
 
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