Scania fault code 5171

Code 5171 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Exhaust gas temperature sensor upstream of SCR catalytic converter T113 The signal from the exhaust gas temperature sensor fitted on the SCR catalytic converter is not plausible. Read explanation → EMD Bypass valve disc actuator, M4001 Actuator power has been limited. Read explanation → EME Bypass valve disc actuator, M4001 Actuator power has been limited. Read explanation → EMO Bypass valve disc actuator, M4001 Actuator power has been limited. Read explanation →