Tadpole wrote:A box in the manual under maintenance of rc valve and setting it up seems to indicate that showing Error 3 when the TPS block is disconnected says the TPS sensor is faulty. But how can it when the bike seems to ride ok and no errors showing?

I am no expert on the MC28.
However, I would expect that if you disconnect the TPS, then of course you will get an "Error 3" implying that the TPS is faulty. It is disconnected, and therefore not working.
Maybe I have misinterpreted what you have said? Just trying to get the obvious stuff out of the way here.
_________________
[color=#808080][size=9]Yes,.. I too know how to waste Time and Money,...