Nissan Repair: 02 sentra auto trans, transmission shop, sentra

Question
code p0720.   intermittent no upshift ,  problem not duplicated in shop, or test drive.  with mil on no problem found, erased & drove.

Answer
Mark,

The shift computer for the transmission found and error and went into limp mode.  If you reset the code and it stays gone you are good.  If it comes back, before you erase the code have a transmission shop read specific transmission codes to see what the computer shows.