Anyone else getting P0171 and P0174 on a 2019 Tundra?

Flynn said:
Any chance it could be the intake manifold? If there’s a crack or something, that could explain the lean codes.

I actually put in a new intake manifold not too long ago. Thought that would fix it, but nope.

@Ashby
Dang, that’s rough. At least you can rule it out, I guess.

Have you looked into the MAF sensor again? Sometimes they go bad quickly if they weren’t great to begin with.

Tory said:
Have you looked into the MAF sensor again? Sometimes they go bad quickly if they weren’t great to begin with.

Good call. I replaced it about 8 months ago, but maybe it was a dud. Thinking of trying a new one over the weekend.

@Ashby
Yeah, I’d give it a shot. Sometimes these sensors can be hit or miss.