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04-10-2008, 01:35 PM
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AF Newbie
Join Date: Apr 2006
Location: Nashville, Tennessee
Posts: 6
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01 Blazer-code P0155 and P0141 after lower intake gasket changed?
I have a 2001 Blazer LT 2wd with the 4.3 vortec (W). I changed the lower intake gaskets and valve cover gaskets (thanks to this forum). The check engine light came on right after I changed the gaskets with codes P0155 and P0141 (oxygen sensor heater circuit). Could this be caused by anything that I did when I changed the gaskets? Other than the check engine light the Blazer runs great. Any help would be appreciated.
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