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

Conditions for diagnostic trouble code (DTC):
1) J1939 -2 datalink fault

Observable symptoms
1) Loss of power

Probable cause
1) Open circuit, Data link
2) Short circuit to ground
3) Short circuit to higher voltage
4) Short circuit CAN H – CAN L
5) Faulty or missing terminating resistor in the powertrain datalink
6) Faulty termination resistance in the engine control module (ECM)