scottb ... 11/18/2012
2005 Dodge Ram 1500 Laramie 8 Cyl 5.7L
I have a check engine light - it is showing code P0128 - my truck has never overheated or lost coolant.
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). P0128 indicates the engine has not achieved the optimum temperature within the specified amount of time.