P0668 BMW - DME Internal Fault Interior Temperature Sensor Signal
P0668 BMW Possible Causes
- Obstructions in the airflow of the radiator or transmission cooler
- Kinked or damaged transmission fluid lines
- Damage to the transmission cooler
How do I fix code P0668 BMW?Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Cost of diagnosing the P0668 BMW code
Labor: 1.0The cost of diagnosing the P0668 BMW code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
- 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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