Scania fault code 12

Code 12 is used by 14 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Control unit Incorrect or unreliable data. Read explanation → TMS Transmission Management System Control unit The application is not running because the control unit has been requested by KWP to stay in boot mode. Read explanation → COO Coordinator Verification of starter key The starter key could not be verified. Read explanation → CUV Visibility system Rear foglamp The current consumption on the control unit output has exceeded 6 A. Read explanation → OPC Opticruise gearbox control Control unit The application is not running because the control unit has been requested by KWP to stay in boot mode. Read explanation → ACC Automatic Climate Control Air temperature sensor The air temperature sensor value is outside its limits. Read explanation → ACS Articulation Control System Right pressure sensor, ACS The signal from the right pressure sensor is outside its range. Read explanation → RET Retarder Control unit Incorrect or unreliable data. Read explanation → AUS Audio System Loudspeaker, short circuit Short circuit to voltage supply in the circuit to the mid-range speaker in the rear left-hand door. Short circuit to voltage supply in the circuit for the left-hand mid-range speak… Read explanation → BCS Communication with the visibility system (VIS) Communication with the visibility system (VIS) has been terminated. Read explanation → BWS Communication with the torque converter The bodywork control unit is configured for the torque converter, but it is not receiving any signals from the torque converter. Read explanation → AMP Loudspeaker channel 4, break in circuit The AMP control unit has measured a voltage that indicates a break in the circuit. Read explanation → CTR Minus sign switch The switch with the minus sign on the CTS unit is jammed. Read explanation → CTS Switch on the operation unit The minus function switch is stuck. Read explanation →