LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Pathfinder LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> DTC P0128: Thermostat Function >> DTC Confirmation Procedure >> With CONSULT-II
April 5, 2026: LEMON Manuals is launched! Read the announcement.

With CONSULT-II

  1. Replace thermostat with new one. Refer to "THERMOSTAT ". Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
  2. Turn ignition switch ON.
  3. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-II.
  4. Check that the "COOLAN TEMP/S" is above 60°C (140°F).

    If it is below 65°C (149°F), go to following step.

    If it is above 65°C (149°F), cool down the engine to less than 65°C (149°F), then retry from step 1.

  5. Drive vehicle for 10 consecutive minutes under the following conditions.
    Fig 1: Vehicle Speed Table
    G00336359Courtesy of NISSAN MOTOR CO., U.S.A.

    If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE  " .