Error Codes - Lambda Related

[Jordan_Lopez]

Hello Fam!,

I've got the following error messages pulled from Bimmerlink and was wondering if and which O2 sensors could be causing this so I could purchase the right ones. Car was misfiring few weeks ago but has since stopped for about 2 weeks now but still got the following codes.

I also turned on my Cold start back as it was initially deleted which could have been contributing to my rough idle.

Also recently replaced the plugs to the NGK gapped at .021 , and Dinan coils and running with VRSF top mount cooler and VRSF intakes

Thanks in advance for your time.


Codes from Bimmerlink:


12B304 Lambda probe heating after catalytic converter, control: Open Circuit

12AA02 Lambda probe catalytic converter 2, electrical: short circuit to earth

128C01 Lambda probe before catalyst 2: air leakage detected

118101 Mixture contorl 2 : Mixture too lean

12B404 Lambda probe heating after catalytic converter, control 2: Open Circuit

[b_w.]

i would just replace all of them. probably going to go soon.