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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1430 (Engine Control System) >> DTC P0128: Thermostat Function >> DIAGNOSTIC TROUBLE CODES Confirmation Procedure >> With Consult-II
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With Consult-II

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. Replace thermostat with new one. Refer to "WATER INLET AND THERMOSTAT ASSEMBLY ". 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 60°C (140°F), go to following step. 

    If it is above 60°C (140°F), cool down the engine to less than 60°C (140°F), then retry from step 1. 

  5. Drive vehicle for 10 consecutive minutes under the following conditions.
    Fig 1: Scan Tool Display "Data Monitor"
    G02401446Courtesy of NISSAN MOTOR CO., U.S.A.
    VHCL SPEED SE DESCRIPTION CHART

    VHCL SPEED SE 80 - 120 km/h (50 - 75 MPH)

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