The transmission output shaft sensor (OSS) is a vital component in Ford’s DPS6 dual-clutch transmission found in the EcoSport, Fiesta, and Focus. It monitors the rotational speed of the output shaft, which transmits power to the wheels. This information is crucial for the transmission control unit (TCU) to determine the appropriate gear selection and clutch engagement.
- Jerky or erratic shifting
- Shuddering during acceleration
- Unexpected gear changes
- Reduced power or limp mode
- Illuminated check engine light (CEL)
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