P0194 - Fuel Rail Pressure Sensor A Circuit Intermittent/Erratic

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DTC DESCRIPTION P0194 - FUEL RAIL PRESSURE SENSOR A CIRCUIT INTERMITTENT/ERRATIC

Description: This DTC sets when the FRP voltage is intermittent or erratic.
Possible Causes: FRP circuit open FRP circuit short to voltage FRP circuit short to VREF circuit SIGRTN circuit open VREF circuit open VREF circuit short to SIGRTN circuit VREF circuit short to ground Damaged FRP sensor connector Damaged FRP sensor
Diagnostic Aids: The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument panel cluster (IPC) message center. Monitor the FRP PID with the ignition ON, engine running. Check for an intermittent or erratic FRP sensor voltage.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST MB .