P0128

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

DTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
- GENERAL DESCRIPTION

TROUBLE SYMPTOM:
Thermostat remains open.

CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode.

Step 1 - 4: