OBDII Code List > P0128 MAZDA
OBDII Codes Powered by 
|
P0128 MAZDA
P0128 MAZDA - Coolant Thermostat Malfunction
| Comments | Add Yours |
Possible causes
- Insufficient warm up time
- Low engine coolant level
- Leaking or stuck open thermostat
- Engine coolant temperature sensor harness is open or shorted
- Engine coolant temperature sensor circuit poor electrical connection
- Faulty engine coolant temperature sensor
- Low engine coolant level
- Leaking or stuck open thermostat
- Engine coolant temperature sensor harness is open or shorted
- Engine coolant temperature sensor circuit poor electrical connection
- Faulty engine coolant temperature sensor
Tech notes
There is a service bulletin for the following Mazda models:
2004-2005 Mazda3 vehicles
2006-2007 Mazda5 vehicles
Mazda Service Bulletin Code P0128
2004-2005 Mazda3 vehicles
2006-2007 Mazda5 vehicles
Mazda Service Bulletin Code P0128
When is the code detected?
The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0128 MAZDA Description
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.
MAZDA Technical Service Bulletins for P0128 code
2004 MAZDA MAZDA3 ELECTRICAL SYSTEM Details
2005 MAZDA MAZDA3 ELECTRICAL SYSTEM Details
2004 MAZDA RX8 ELECTRICAL SYSTEM Details
Need more help?
Need parts?
