I have a 2006 1200C. The speedo was jumping all over the place. All lights and turn signals working fine. Pulled and cleaned the VSS resulting in constant speedo readings. Now the problem is that the (newly experienced) constant readings are about 5-15 MPH too fast. Seems to be a calibration issue, no? Going to check the diagnostic codes today...thanks forum for that bit of info! Always willing and appreciative of additional suggestions and/or comments.