Volvo All Engines (2010 Emissions) Fault Code: SPN 1231 FMI 9 PID: PSID 229 SAE J1939 Data Link 2

Conditions for diagnostic trouble code (DTC):
1) CAN communication does not work

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

Probable cause
1) Internal fault in electronic control unit (ECU)
2) Connector
3) Data link
4) Faults on the datalink can be localised by combining this diagnostic trouble code (DTC) with other DTCs