P0128 DODGE

P0128 DODGE - Thermostat Rationality

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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
Tech notes
If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem.
When is the code detected?
Coolant temperature does not reach predicted engine coolant temperature within specific time
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0128 DODGE Description
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.
DODGE Technical Service Bulletins for P0128 code
2008 DODGE CALIBER Power Train:automatic Transmission:control Module (tcm, Pcm) Details
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