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Home >> Toyota >> 2004 >> Matrix Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 129 (Engine Control System Self Diagnostics) >> Diagnostic Tests >> DTC P0128: Thermostat Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

If the engine coolant temperature does not reach 167°F (75°C) after engine warm up, it is abnormal.