DTC P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
WARNING: This page is about a different variant/trim than selected.
P0128 - COOLANT THERMOSTAT (COOLANT TEMP BELOW THERMOSTAT REGULATING TEMPERATURE)
| Description: | This DTC sets when the thermostat monitor determines that the engine coolant temperature has not achieved the required engine operating temperature within a specified amount of time after starting the engine. | ||
| Possible Causes: |
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| Diagnostic Aids: | The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. Refer to POWERTRAIN CONTROL SOFTWARE for system information. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST K . | ||