My 1.8TS Cloverleaf GT has developed the dreaded MCSF warning and even though she drives perfectly, the warning persists. I had a new battery fitted to rule that out so I took the car for a diagnostic and the error code was P0150 Upstream Lambada 2 Sensor. The warning did clear following the test a few days ago but has returned today . As I say, there is no lack in performance or anything that is apparent other than the literal warning shortly after start up and the warning symbol which stays constant throughout the drive . I see that this is a generic Alfa problem but would appreciate some seasoned guidance.