Possible causes – Low transmission fluid level– Dirty transmission fluid– Shift solenoids– Transmission mechanical problems– Transmission hydraulic control circuit Tech description There is a Nissan bulletin for the following models: 1995-1996 Nissan Maxima1995-1997 Nissan Sentra/200SX 1996-1997 Nissan Truck1995-1997 Nissan Altima1996-1997 Nissan Pathfinder1995-1996 Nissan 240SX1996-1997 Nissan Quest Nissan Factory Service Bulletin OBDII Code P0731 2002 Nissan…