: Diagnostic Code P0128



puddytat2tn
01-22-13, 02:20 PM
Have a 2006 STS - am getting Diagnostic Code P0128 - anyone know what this means? Thanks.

Subsailor613
01-22-13, 08:22 PM
PO128= Generic Coolant Temp Below Thermostat Regulating Temp
This is a Generic DTC Definition .
DTC=Diagnostic Trouble Code .

orange57
01-22-13, 11:42 PM
How is your coolant level? How has your gauge been reading?