ON most newer cars when the check engine lamp comes there are at least 40 different things that can cause the checke engine lamp to come on!!
Only maybe one in 20 is from a bad 02 sensor!!
HAVE someone read the computer codes to make a correct diagnosis.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)