Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For oil pressure inspection, refer to "ENGINE OIL PRESSURE CHECK ".

CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E121 and oil pressure switch connector F106.
3. Check continuity between IPDM E/R harness connector E121 terminal 57 (P/L) and ground.
  Continuity should not exist.
OK or NG
- OK: GO TO 2.
- NG: Repair harness or connector.
  
  Fig 1: Checking Continuity Between Terminal 57 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK OIL PRESSURE SWITCH
Check oil pressure switch. Refer to "OIL PRESSURE SWITCH ".

OK or NG
- OK: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
- NG: Replace oil pressure switch.