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Discussion Starter · #1 ·
I have a 2018 Malibu 1.5l turbo giving a p0171 bank 1 lean code . It’s intermittent , it’ll give the code and flood the engine with fuel where it won’t even rev . Then it’ll sit a couple days and run fine then act up again .
I’ve changed the map sensor , checked everywhere for a vacuum leak and can’t find one . This thing has me stumped . Anyone have any clues ?
 
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