Hi guys, i have a 2006 X5 3.0i 90k miles. I have this code that i am trying to get rid of and nothing i did so far helped me. I did some research on the internet and i have found only one success story on resolving this(by changing one of the o2 sensors), but that fix didn't help me.

One thing i have to mention, i am not sure if it has anything to do with this, but right before i started getting the code i changed some components to the cooling system(thermostat was stuck on open); i changed thermostat, water pump, expansion tank; on top of that i added one can of liqui moly jectron when i filled the tank.

What i did so far trying to fix this:

changed upstream O2 sensors
changed intake boot
changed disa
changed spark plugs and coils
changed valve cover gasket.
cleaned maf

Car runs great...smooth, no power loss, very good MPG 20-21.

Anyone else had this issue? if so, how did you fix it?