Today I pulled error codes "45" ( knock sensor cyl 1-3) and "46" (knock sensor cyl 4-6). I did some testing and found that the error codes only occur when the engine has warmed up completely. The codes only occur after 5- 10 min of driving and not at start up or while reving the engine in neutral. There is no performance loss while driving either. I think that the knock sensors may be alittle loose.
thanks for your help
thanks for your help