Scania fault code 6521

EMS Engine Management System Secondary brake pressure circuit pressure signal, below normal. The circuit pressure is constantly below the required level for operating the pneumatic actuators on the engine for an extended period of time. Read explanation → EMD Exhaust gas pressure sensor T125 Implausibly high signal from exhaust gas pressure sensor T125. Read explanation → EME Exhaust gas pressure sensor T125 Implausibly high signal from exhaust gas pressure sensor T125. Read explanation → EMO Exhaust gas pressure sensor T125 Implausibly high signal from exhaust gas pressure sensor T125. Read explanation →