636 trouble

[RocketPunch]

@OhNoPOPO

Anyone have a scanner or know of someone with one?

Have you read greg’s post?? You don’t need a scanner.

@usmc2801

Remove both seats and the storage box. Locate the loose single yellow wire coming off the main harness to the right of the storage box. With the key off run a jumper wire from the yellow wire to a good ground. Turn the key on and count the number of long and short blinks that identify the fault code. The long blinks will be the first number and short ones will be the second number of the thrown code. The ECU is substituting a value for the sensor that is out of tolerance which is why the bike still runs good. Replace the sensor at your convenience as it will not cause any running problems if it is code 15.