Scania fault code 1553
Code 1553 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
TMS Transmission Management System
Position sensor for freewheeling retarder, short circuit
The control unit indicates that the position sensor voltage supply is short circuited to 30 voltage.
Read explanation →
BMU Battery Management Unit
Contactor unit R125, current higher than requested
Charging cancelled. Measured current has been higher than the permitted current, 10 A, for 5 seconds.
Read explanation →
OCS
Relay for shut-off valves for vehicle gas on the high pressure side
Low voltage in the circuit.
Read explanation →