LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1110 (Engine Control System) >> DTC P0125: ECT Sensor >> Diagnostic Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Replace engine coolant temperature sensor.
  2. CHECK THERMOSTAT OPERATION

    When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Repair or replace thermostat. Refer to "WATER INLET AND THERMOSTAT ASSEMBLY "
  3. CHECK INTERMITTENT INCIDENT

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    For circuit, refer to "WIRING DIAGRAM ".

    1. INSPECTION END