seat leon fr pd170

Evening I'm after a bit of help I'm just wondering if the timing belt has to come off to replace the camshaft sensor on the 2.0 tdi pd170. I pulled the grommet out but I can't seem to see the bolt that holds the sensor in place. Thanks

I have a seat Leon fr tdi pd170. No fault codes on vagcom. It is constantly underpowered, there is no loss of power all of a sudden but constantly feels slow and sluggish. I have changed the high pressure fuel pump and no lunch. I have changed the maf sensor and no luck either. What would be...