Volvo All Engines (2013 Emissions) Fault Code: U033100 PID: EMS Software Incompatibility With Body Control Module “A”

Conditions for diagnostic trouble code (DTC):
1) Message missing on J1939 from the following electronic control unit (ECU): Vehicle Control Unit (VECU)

Observable symptoms
1) An electronic control unit (ECU) lacking communication with other ECUs can cause a number of symptoms

Probable cause
1) The electronic control unit (ECU) has a software fault or the wrong software version
2) Control unit has no supply voltage
3) Connector
4) Data link

Detailed information
1) Faults on the datalink can be localised by combining this diagnostic trouble code (DTC) with other DTCs
2) It is not probable that the data link is the problem if the diagnostic code (DTC) occurs alone as data link related DTC
3) Faulty software or software version can result in the message being absent from the datalink
4) Guided Diagnostics will automatically detect combination of data link DTCs and refer to another fault tracing procedure
5) If there are no diagnostic trouble codes (DTCs) set by the electronic control unit (ECU) from which data is missing, the cause may be power failure to that ECU