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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Engine Controls - Self-Diagnostics - 1.8L - XE, GXE) >> Diagnostic Tests >> DTC P0128: Thermostat Function >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Check ECT sensor as shown in illustration. See Figure . If ECT sensor is okay, test is complete. If ECT sensor is not okay, replace ECT sensor. Perform DTC CONFIRMATION TEST  to verify repair.

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