P0340 Troble code Camshaft position sensor

What is your question?

Ive had this code for a while now. It never lets the check engine light shut off so I get it checked with a code reader regularly to see if anything new pops up. Ive replaced the sensor it was not damaged. The wiring looks to be ok. Atleast the areas i can see. The truck runs great does not stall or miss fire. I cant pass emissions with the light on and I'm out of ideas.