P186C – High Side 3 System Short To Power Supply

P186C Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P186C Possible Causes

Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU),TC-SST-ECU harness is open or shorted,TC-SST-ECU circuit poor electrical connection

P186C Description

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the supply current to the high side 3 is determined to be short to the power supply.