Need Urgent Help for retiming
 

Hello all,
I just completed the whole chain guide job. I got everything back together. Car run, drive and idle good. But I still have the p0021 error code. Is my timing off from bank 2 (driver side)? Do I need to open both valves to have it retiming to just open only the driver side to retime? Btw, I did switch the cps but still get the p0021. So the cps still good. Any input is much appreciate. Thanks