Operation CHARM: Car repair manuals for everyone.

Troubleshooting

DTC P0128 THERMOSTAT MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:




If the water temperature becomes 75 °C (167 °F) or more, it is abnormal.
If not due to the thermostat malfunction, it is abnormal.

Step 1 - 2:




INSPECTION PROCEDURE