I'm getting this P 1390 code error. I did have my timing belt work on as well the replaced a new water pump since we were already there. We followed the manual as far as the timing belt and it's mark are concern. I didn't do the repair but just want to knowif the crankshaft position sensor located where I can see or will a ceriftied machanic have to open up the engine. That way when I talk to the person that did the work think I know a little bit about what is going on. Oh, thanks to this forum I was able to check the code on the odometer using the techinque disscribe and resetting the codes. That was so easy. Now when I go to the machanic I'm going to show him that I don't need a Actron Scanner check from Autozone or Oreilly's.