Leaderboard

It's extremely rare for ECUs to fail these days, the manufacturing methods and quality control are such that build faults don't get through and in-use failure is almost unknown. Having said that, anything is possible. As I've said before, by far the most common and likely problem is with connectors. When they swapped the ECU I wonder if they swapped it back for the "faulty" original one to check the problem returned, and preferably swapped the "faulty" one onto the donor bike for the "good" ECU? Does the fault move with the "faulty" ECU? Quite often simply disconnecting the plug/so

I once had someone tell me (in a voice full of wonderment) that he had tried his 'faulty' ECU on a different car (Suzuki Vitarra) and it had worked perfectly. But it wouldn't work on his own car. And neither would the 'good' ECU from the second car. He asked me what his next move should be? I suggested a job behind the cheese counter at Sainsbury's. Two minutes with a multi meter showed the crank sensor to be faulty (btw).

The bike is 4 years old with 65000km on the clock so probably not under warranty. Unless the owner asks the dealer to fix it and pay for it then it is not the dealers responsibility. They are not a charity

Swap the plugs around, does it still do it on the same cylinder?