DTC P0126 & DTC P0128: Notes
WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
Code Definition
- DTC P0126: Coolant thermostat stuck open.
- DTC P0128: Coolant thermostat stuck open.