I have a 2006 roadster. Engine light came on and I had the dealer diagnose the problem. Codes read bank 2 sensor 1 slow to read and bank 1 sensor two slow to read. For what they wanted to replace I left and ordered all four new Bosch sensors and replaced them. I hadn't driven 30 miles and the check engine light came back on. Sure enough, the same messages came up when I had someone else hook up their ODBC. I'm at a loss as I can't believe all the new sensors were bad. Has anyone had this happen or have any suggestions? Thanks in advance for any help.