More than likely the bracket holding the transducer to the gearbox or faulty transducer
I had the same problem. It turned out that the transducer had somehow rubbed off the flange being the gearbox (mine is a 2009 mode. I believe the transducer is behind the brake disc on later models?), or something got between the two and the contact face was damaged. Phil in Brands Hatch Morgan sorted me out with a new transducer ( after I sent the clock to Wales for testing to be sure) and it's 100% now. It does have to be positioned microns away from the flange of it will not pick up a signal and you will get an engine warning light as well. The Transducers are not cheap - €80 I think! G
