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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 423 (Engine Control System - DTC) >> DTC P0125: ECT Sensor >> Diagnostic Procedure >> 2. Check Thermostat Operation

2. Check Thermostat Operation

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

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 THERMOSTAT AND THERMOSTAT HOUSING .
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