Scania fault code 5921

Code 5921 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Throttle M42, supply voltage too low The throttle has detected that the supply voltage is lower than 7 V. Read explanation → ZF ZF gearbox Torque converter speed sensor Incorrect signal from the torque converter speed sensor. Read explanation →