Scania fault code 1559

Code 1559 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

TMS Transmission Management System Freewheeling retarder position sensor - Open Load Read explanation → BMU Battery Management Unit Contactor unit electrical power take-off, incorrectly connected to propulsion battery Negative voltage was measured to the electrical power take-off contactor unit during pre-charging. Read explanation →