Wesley Vocino
New member
Hey guys,
I have a P0172 check engine code, System Too Rich Bank 1 on my e46 m3. I went through a few cycles and this is the only code that pops up. Last year I thought it was my K&N 57 cold air intake as it was oiled in the past, so I bought a new K&N filter. Code never came back for about 1500kms, however now after taking her out from the winter I am getting this code again.
Any ideas as to what it can be? Did anyone else ever have this problem?
As I am only getting the code for bank 1 I am thinking maybe the 02 sensor (which I changed recently, but was unplugged and re-plugged after I had to swap in a new engine due to my old one blowing up. If not maybe injectors or spark plugs on 1 of the first 3 cylinders?
The car has Agency Power Headers, Magnaflow Exhaust, K&N 57 Cold Air Intake, and an Evolve Tune.
Thanks!
I have a P0172 check engine code, System Too Rich Bank 1 on my e46 m3. I went through a few cycles and this is the only code that pops up. Last year I thought it was my K&N 57 cold air intake as it was oiled in the past, so I bought a new K&N filter. Code never came back for about 1500kms, however now after taking her out from the winter I am getting this code again.
Any ideas as to what it can be? Did anyone else ever have this problem?
As I am only getting the code for bank 1 I am thinking maybe the 02 sensor (which I changed recently, but was unplugged and re-plugged after I had to swap in a new engine due to my old one blowing up. If not maybe injectors or spark plugs on 1 of the first 3 cylinders?
The car has Agency Power Headers, Magnaflow Exhaust, K&N 57 Cold Air Intake, and an Evolve Tune.
Thanks!