P186B – High Side 3 System Open Circuit

P186B Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P186B 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

P186B 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 open.