Assume you mean [P][R][N][6][5][4][3][2][1], assuming you have a 6 speed, or something like this?
This means there is a transmission related fault, possibly intermittent.
Usually an OBDII scan tool can read error codes, there should be codes even if the transmission display has gone back to normal.
This means there is a transmission related fault, possibly intermittent.
Usually an OBDII scan tool can read error codes, there should be codes even if the transmission display has gone back to normal.