Error Code 225

I have a 2002 BMW 325i. It is showing error code 225. I have really only found one link "Googling" this error code. It tells me to try cleaning the MAF and if that doesn't work it is probably the catalytic converter. Any of the experts on here have any other ideas?



Really appreciate all the help browsing these forums. I have successfully diagnosed other small problems with the use of these forums.



Thanks in advance for all the help.