Error code 20 yamaha raider - 2008 Yamaha Raider

SOURCE: 2009 Yamaha Raider S. Removing right side painted

Slightly lift the cover up & remove

SOURCE: what is error code 12 on raider xv 1900

I assume the error code 12 is the same as a fault code. In that case you have a abnormal signal from the crankshaft position sensor, either originated from the sensor itself or failure (fractured core)in the wiring harnes or in the conections between the sensor and the Engine Control Unit (ECU).

SOURCE: I am getting an error code 28 on my 2009 yamaha

That code means "Engine Heat Sensor out or shorted"