P0128

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

DTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
- GENERAL DESCRIPTION P0128

TROUBLE SYMPTOM: Thermostat remains open.

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode Clear Memory Mode and Inspection Mode. Preparation For the Inspection Mode

Step 1-2: