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      04-19-2024, 09:57 AM   #4
NPT57
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Drives: 2006 330i
Join Date: Apr 2024
Location: Pennsylvania

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Thank you for the detailed response. I agree. I have a good feeling the P1429 code is related to a fuse/wiring issues. I’ll have to track down what fuse controls it as well as trace the wiring.

As far as the tank venting, this is my larger concern as I figure all of that tank pressure cannot be good for the fuel pump..
The tank pressure builds while driving. When I open the gas cap, it seems to vent atmospherically from the neck out of the tank. I can actually hear the internal sizzling/bubbling of the gas with the cap off.
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