P0128

DTC P0128 - COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)

DTC DETECTING CONDITION:
Fault occurs in two consecutive driving cycles

TROUBLE SYMPTOM:
Thermostat remains open.

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE.

Step 1 - 4: