03SSLE |
02-09-2014 02:10 PM |
Check the cooling fan circuit. You may have a bad relay or (as you suggest) a bad wire in the harness. Once you get the fan situation under control I have a feeling your P0128 problem will go away. Even though it indicates a problem with either the thermostat or ect, you have to keep in mind the code will also be triggered if coolant temp is too low. With the fans constantly running from start up the coolant may not be reaching operating temp within the allotted time before the PCM sets the code.
|