Hello,
I have a R1200GS (MY2008). I have noticed lately, that it is giving some Knock Sensor Fault code (10209 Knock-sensor 1 defective.The fault is not present now.).
How serious is this? I have changed the fuel between 98E5 and 96E10, but nothing else. I use latter now because it gives a smoother run.
Is the knock sensor hard to change and is it expensive?