Scania fault code 1556

Code 1556 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:

TMS Transmission Management System Oil distribution piston position sensor, unreasonable resistance in the position sensor coil The control unit indicates that the value of the resistance in the coil of the position sensor is not reliable. Read explanation → BMU Battery Management Unit Electrical power take-off R126, fault in the positive contactor and negative contactor After the contactors opened, voltage class B was detected from the electrical power take-off. Read explanation → ALLISON Allison automatic gearbox Fault on torque limiter between engine and gearbox Engine does not respond to gearbox request for torque reduction. Read explanation →