P0128 trouble code, isn’t always a thermostat…is it?

Jimmy, Making it work · 185K views · 0:16

Skill Level

Intermediate

Time Required

Half day

Estimated Cost

$0–50

Equipment

Honda 2016-2021 Civic 10th Gen

Permit Required

Tools Needed

scan tool, socket set, wrench, coolant drain pan

ALWAYS COMPARE AIR TEMP AND COOLANT TEMP USING A SCAN TOOL WITH ENGINE AT ROOM TEMP BEFORE ASSUMING IT IS A THERMOSTAT.