P0128

DTC P0128 Coolant Thermostat Malfunction

DESCRIPTION
The coolant thermostat is located in the engine coolant passage of the cylinder head for regulating engine coolant temperature. When the engine coolant temperature is reached to a specific temperature, the expansion element in the thermostat activates a valve, which redirects the flow of engine coolant into a radiator bypass line.

DTC Detecting Condition:

Specifications:

Step 1:

Step 2:

INSPECTION PROCEDURE