Hey guys I have a 2003 g35 auto sedan. I just changed out the transmission filter now my car throws a p0720 code. I lost my manual mode as well as 5th gear. I owned the car for a year with 171,000 atm I put about 11,000 on it. The car never had shifting problems before I opened the pan and instantly noticed after the job was done. The engine light also my AT light blinks about 11 or 12 times upon start up. Only thing I can think of is I pinched a wire with the pan have not had time to check yet but any other ideas what could of happened .thanks guys

 

I would also think u pinched a wire while doing the job.