P17F4 BMW – Ratio Monitoring Clutch ‘B’ and ‘E’

P17F4 BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P17F4 BMW Possible Causes

Transmission Mechanical Problems,Faulty Transmission Assembly

P17F4 BMW Description

The Transmission Control Module (TCM) monitors the Clutch Ratio. The TCM sets the OBDII code when the Clutch Ratio is not to factory specifications.