Scania fault code 1121

Code 1121 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:

VDT Internal fault The safety check has identified a prohibited activation of solenoid valve RBG. Read explanation → MBS Sequential half-bridge controller, expansion unit K, short circuit The shared pin on expansion unit K, which is controlled by the sequential half-bridge controller, is short circuited. The voltage for the pin is outside the permitted value. Read explanation → ALM Fault in communication between motion detector and inclination detector Faulty LIN communication between ALM control unit E7 and motion and inclination detector T78. Read explanation →