I just rebuilt an engine on a 2014 Hyundai Genesis coupe 2.0t and now I have two codes I can’t get rid of. P0340 and p0365. Replaced the camshaft position sensors and the codes still come back. Ive seen people say it has to do with timing, but as I just put it back together, the timing is fine. It runs fine when it get going, still has full power but it takes longer than it should to start. I really like this car and would like to get rid of the codes. Any help would be greatly appreciated.
Please see the FAQ
Stretched timing chain can do it.
I replaced my camshaft sensor on a 2002 civic with an oem one just to find out the new one was defected and had to change it again. Test the sensors with an oscilloscope and look for a good wave form. And also look at the current ripples from alternator sometimes the diode inside the alternator goes bad and could easily set that code or other codes. Good luck.
