P0128 2007 NISSAN SENTRA - Thermostat Function
P0128 2007 Nissan Sentra Possible Causes
- Leaking or stuck open thermostat
- Low engine coolant level
- Insufficient warm up time
- Faulty engine coolant temperature sensor
- Engine coolant temperature sensor harness is open or shorted
- Engine coolant temperature sensor circuit poor electrical connection
P0128 2007 Nissan Sentra Tech Notes
Check for coolant leaks first, if there are no leaks check to see if thermostat is opening and closing properly if its not replace thermostat if problem is still there coolant temperature sensor may need to be replaced.
Cost of diagnosing the P0128 2007 Nissan Sentra code
The cost of diagnosing the P0128 2007 Nissan Sentra code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected?
The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.
P0128 2007 Nissan Sentra Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0128 2007 Nissan Sentra Meaning
The thermostat is a component that blocks the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine. Once the engine reaches its operating temperature, the thermostat opens. The OBDII sets when the engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or the thermostat open stuck.