Hi folks.
I keep getting my dash engine warning lights coming on, on my is250 2007.
When I use my diagnotics program I get code P017. It says my Bank 1 sensor B is at fault.
So far it looks like my timing belt is needing replaced as it may have stretched. However, before I got to that length I want to make sure it's not just the sensor.
Can anyone tell me it's exact location? Even a photo woould be great.

Thanks