Volvo All Engines (2010 Emissions) Fault Code: SPN 629 FMI 8 PID: SID 254 Electronic Control Unit (ECU) 1

This Diagnostic Trouble Code (DTC) indicates internal faults in the Engine Control Module (ECM).

Conditions for diagnostic trouble code (DTC):
1) Internal fault in electronic control unit (ECU)
2) Incorrect self test in the engine control module (ECM)

Observable symptoms
1) Engine does not start

Probable cause
1) Engine control module (ECM)

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