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      08-25-2022, 08:42 PM   #1
Adrian2877
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Question CEL Popped up on idle - P0174

Hey guys quick question on a code my car recently threw, curious if anyone has any input on it.

Last night I started my car and about 2 minutes later (sitting idle) the car threw a CEL and it turned out to be code P0174, System too lean bank 2.

My car has stage 2 BM3 with ARM catless downpipes (stock intakes) and has been this way for the past 2.5-3 years.

Car is a 2015 M4 with about 50k miles. Drives fine, I don't notice any irregularities.

Has anyone has this code before and successfully diagnosed it?
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      08-25-2022, 09:29 PM   #2
RodF82
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Quote:
Originally Posted by Adrian2877 View Post
Hey guys quick question on a code my car recently threw, curious if anyone has any input on it.

Last night I started my car and about 2 minutes later (sitting idle) the car threw a CEL and it turned out to be code P0174, System too lean bank 2.

My car has stage 2 BM3 with ARM catless downpipes (stock intakes) and has been this way for the past 2.5-3 years.

Car is a 2015 M4 with about 50k miles. Drives fine, I don't notice any irregularities.

Has anyone has this code before and successfully diagnosed it?
You check your O2 sensors?
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      08-26-2022, 12:03 PM   #3
Adrian2877
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Originally Posted by RodF82 View Post
You check your O2 sensors?
I did not personally inspect them but I changed out one of the O2 sensors about 1k miles ago due to code P0036 that I got back in April
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