DTC P0128 / Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature) – 2019-2021 Subaru Forester
NHTSA ID Number: 10199961 Manufacturer Communication Number: 09-75-21 Summary This bulletin announces the availability of NEW reprogramming files to correct DTC P0128. NUMBER: 09-75-21 DATE: 07/28/21 INTRODUCTION: This bulletin announces the availability of NEW reprogramming files to correct DTC P0128. This DTC may be set while the engine is below operating temperature and the vehicle is … Read more