You have all of the information you need; the OBD scanner tells you what the problem is. The
FSM will tell you where to look!
You have a 1997 Sentra GXE, correct?
- P0105 (Absolute pressure sensor)
-
FSM -
http://www.nicoclub.com/FSM/Sentra/1997_Sentra/ec.pdf (Go to page 345) and start troubleshooting.
- Check for vaccuum leaks on the intake system
- Check that the harness is properly plugged into the sensor
- Check that the sensor circuit is not open or shorted (broken wire on the engine harness)
- Check the voltages of the sensor against voltages indicated in the FSM for the set conditions
- etc.
If you need a new sensor, hit up your local Nissan or
G Spec Performance or try
RockAuto Parts Catalog for a cheap price.