Volvo All Engines (2017 Emissions) Fault Code: P009B73 PID: EMS Fuel Pressure Relief Control

Volvo All Engines (2017 Emissions) Fault Code: P009B73 PID: EMS Fuel Pressure Relief Control

Conditions for diagnostic trouble code (DTC)
Electric Pressure Relief Valve, Stuck in closed position

Probable cause
1) Electric Pressure Relief Valve
2) Engine Fuel Pressure Sensor
3) Pressure Regulating Valve (MPROP)