P0128 is a obd code for coolant temperature bellow threshold.
It means that your coolant temp sensor CTS also known as Engine temp sensor ETS is no good and needs to be replaced.
To test it measure the resistance and compare it with the IAT intake air temp sensor and the resistance should be the same.
Service manuals can be found at auto part stores nationwide, if you talk to them they can order you a book for your mazada, also check with the dealership.
Tuesday, February 19th, 2008 AT 9:11 AM