Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- Fuel pressure solenoid harness is open or shorted - Fuel pressure solenoid electrical circuit poor connection - Faulty fuel pressure solenoid - Faulty Engine Control Module (ECM)

When Detected

The Engine Control Module (ECM) has determined that the Fuel Pressure Solenoid Control circuit voltage is implausible.

Description

The Engine Control Module (ECM) uses commanded fuel pump flow to determine a desired fuel rail pressure. The actual fuel pressure is monitored using the Fuel Rail Pressure (FRP) Sensor.