Volvo All Engines (2013 Emissions) Fault Code: P009B12 PID: EMS Fuel Pressure Relief Control

Volvo All Engines (2013 Emissions) Fault Code: P009B12 PID: EMS Fuel Pressure Relief Control

Conditions for diagnostic trouble code (DTC):
1) Short circuit between wires
2) Electrical fault in valve

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Engine de-rated

Probable cause
1) Wiring harness
2) ePRV, Electric Pressure Relief Valve
3) Engine control module (ECM)