Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
There is a Factory Service Bulletin for the following Mazda models:
2004-2005 Mazda3 vehicles
2006-2007 Mazda5 vehicles
Mazda Factory Service Bulletin OBDII Code P0128
To diagnose the P0128 Mazda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.
Need more information on how to fix the P0128 Mazda code? Get Access to Factory Service Manuals
Get the P0128 Mazda code diagnosed by a professional: Find a repair shop in your area
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