DTC P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, 2020 Lincoln Corsair, and 2020 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P0128 - COOLANT THERMOSTAT (COOLANT TEMP BELOW THERMOSTAT REGULATING TEMPERATURE)
| Description: | This DTC sets when the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Refer to THERMOSTAT MONITOR for system information. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Continental 2.0L, | GO to PINPOINT TEST DX . | ||
| Continental 2.7L, | |||
| Continental 3.0L, | |||
| Corsair, | |||
| EcoSport 1.0L, | |||
| EcoSport 1.5L, | |||
| EcoSport 2.0L, | |||
| Edge, | |||
| Escape/Kuga, | |||
| Explorer, | |||
| Fusion 1.5L, | |||
| Fusion 2.0L, | |||
| Fusion 2.7L, | |||
| KA, | |||
| MKZ, | |||
| Mustang 2.3L, | |||
| Nautilus, | |||
| Ranger, | |||
| Transit Connect | |||
| All others | GO to PINPOINT TEST DL . | ||