Dybz
Banned
Before getting into it some specs on car: APR Stage 2, 42DD DP, Modshack intake, 60k miles
Issue: Lean code, idle searches sometimes between 750-850 rpm but often times is steady, no other issues detectable during driving. CEL code is
1 Fault Found:
000369 - Fuel Trim; Bank 1
P0171 - 000 - System Too Lean - MIL ON
Readiness: 0010 0101
Ran boost, fuel rail, some other logs and everything seems ok. I did switch from the modshack to the stock airbox after noticing the MAF air straightener grill was covered in a black sooty like substance. Also, cleaned the MAF with MAF Cleaner from CRC on sunday morning. Drove around for about an hour throughout the day and was fine. CEL popped back up this morning on the way to work. Same code and all. I have already searched for leaks, but can't find anything and since boost logs are ok I'm guessing it's not a leak.
So now the question is, what's left? Can the MAF be bad? Bad O2 sensor? Any way to test these without buying new ones?
Issue: Lean code, idle searches sometimes between 750-850 rpm but often times is steady, no other issues detectable during driving. CEL code is
1 Fault Found:
000369 - Fuel Trim; Bank 1
P0171 - 000 - System Too Lean - MIL ON
Readiness: 0010 0101
Ran boost, fuel rail, some other logs and everything seems ok. I did switch from the modshack to the stock airbox after noticing the MAF air straightener grill was covered in a black sooty like substance. Also, cleaned the MAF with MAF Cleaner from CRC on sunday morning. Drove around for about an hour throughout the day and was fine. CEL popped back up this morning on the way to work. Same code and all. I have already searched for leaks, but can't find anything and since boost logs are ok I'm guessing it's not a leak.
So now the question is, what's left? Can the MAF be bad? Bad O2 sensor? Any way to test these without buying new ones?