3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
I have a 2003 BMW 325Ci. My SES light is on and I pulled the codes at i got P0171 and P0174 which says the car is running too lean bank 1 and 2.
The boot is not cracked or leaking.
I checked for any vacuum leaks with carb cleaner.
I cleaned the MAF.
I checked the fuel filter.
I dont think it would be the O2 sensors because its unlikely for them both to go out, but with my luck anythings possible.
Before i fork out the $300.00 for a new MAF anybody else got any suggestions?
ccv?what does it do if you don`t mind me ask, is there a pending code , can you check your maf with a scope pattern through your scan tool. you can check you other main sensor the same way to avoid any part swapping with no leads
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