Volvo All Engines (2013 Emissions) Fault Code: U300049 PID: ACM Electronic Control Unit

Volvo All Engines (2013 Emissions) Fault Code: U300049 PID: ACM Electronic Control Unit

Circuit description
The electronic control unit (ECU) has a software fault or the wrong software version

Conditions for diagnostic trouble code (DTC)
Incorrect check sum in data set memory

Observable symptoms
Engine does not start

Probable cause
1) Aftertreatment Control Module (ACM)