Scania fault code 1844

Code 1844 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

MBS MBS expansion unit D, power supply pin group V3, current above limit value MBS expansion unit D, current to the pin for power supply pin group V3 has exceeded the limit value of 20 A for more than 5 seconds. Read explanation → ALLISON Allison automatic gearbox Incorrect gear ratio on 4th gear Actual 4th gear ratio does not agree with the calculated 4th gear ratio. Gear ratio is determined on the basis of turbine speed and output shaft speed. This measured gear ratio is… Read explanation →