If only it was that simple, I ve lost the red key some time ago, and under instruction from Motomatrix carried out the ECU basic reset, which means disconnect everything for 24hrs, then reconnect. Same error code.
Water had got into the main ignition plug and the Transponder aerial plug, i think it shorted out causing the ECU to get stuck on 55.
I think i m right, but some what out of my depth.