Scania fault code 4387

EMS Engine Management System Cylinder balancing, cylinder 3 The highest level to which the control unit can adjust the fuel volume for the cylinder has been reached. Read explanation → BMU Battery Management Unit Battery module 3, cell monitoring circuit board, minor internal fault The cell monitoring circuit board has detected an internal error and is having trouble monitoring the status of the battery module. Read explanation → DDU Mono channel 2 in audio output, break in circuit Information is missing, update is in progress. Read explanation → AMS Reductant circuit, high pressure The reductant pressure is too high when the reductant pump is shut off​. Read explanation →