P0668 BMW - DME Internal Fault Interior Temperature Sensor Signal
- Obstructions in the airflow of the radiator or transmission cooler
- Kinked or damaged transmission fluid lines
- Damage to the transmission cooler
Tech notesReplace DME as sensor is internal component
- Engine Light ON (or Service Engine Soon Warning Light)
P0668 Bmw DescriptionThe control solenoid (w/body and TCM) valve assembly has a built-in TCM temperature sensor to detect possible overtemperature conditions of the Transmission Control Module (TCM). This fault indicates the TCM is in an overtemperature condition and the TCM has shut down to protect from possible heat damage to the TCM. TCM will remain off until the over temperature condition no longer exists.
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