2010 Porsche Panamera 4s
Hey Everyone Thank you in advance for any insight or input.
just so the picture is clear. about 3 days ago I did my oil change on my panamera no issues or problems. but for the last couple months I would get a check engine light that would come on for awhile and then go off. I pulled code P1347 for the valve lift control bank 2. I researched and found it is in fact just the solenoid to be replaced, so 2 days after my oil change. I drove to my parents house like I usually do no problems. when I left 2 hours later. my PCM was silent no music or sound while showing loading medium. i reset the pcm no avail. I got home disconnected the negative battery for 20 minutes when I put it back on problem solved... then later after driving off and on for another hour or 2 I get a transmission fault warning then the check engine light and then my car just wouldn't respond while hitting the gas. it would just Rev. after an hour sitting with the car off and when the tow truck driver got there I started the car no transmission fault this time but the check engine light was on and the pcm was just black. so I had the car towed 3 miles down to my mechanic who was there working a project at 10:30PM and now im in the waiting game for him to get to it. just curious has anyone seen these codes come up? could they have came up because of the solenoid failure??

P1991 Passive/Sporadic Torque Intervention not possible
U0418 Passive/Sporadic Check PSM control unit trouble codes
U0447 Passive/Sporadic Check gateway control unit trouble codes
U0456 Passive/Sporadic. Check A/C operator control unit - this fault can be ignored if active.