P0016 after head replacement 2005 S40
 

This S40 is going to make me drink..I purchased this S40 2.5 AWD 2 months ago with a broken timing belt. I replaced the head with a rebuilt unit, New timing belt, etc..I used the correct tool to lock the cams and set the timing. I originally had a P0016 and P0017 code. I have now removed and re-installed the timing belt using the correct tools at least 5 times, The P0017 code is gone, but P0016 remains, and I have a lumpy idle now, Car runs fine down the road, but idles poorly, and posts the code on the next restart. I have swapped the cam position sensors between intake and exhaust cam, but problem does not travel with the sensor. This job is relatively simple after you assemble/disassemble so many times. Does anyone out there have a suggestion? Thanks in advance..Rich..PS- I currently have the timing belt off and VVT sprockets loose