DTC P0192 Fuel Rail Pressure Sensor Circuit Low Bank 1: Notes

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Improper idling
Poor driving performance

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode .
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Fig 1: Fuel Rail Pressure Sensor Circuit Low Bank 1 - Wiring Diagram

G09480917

Courtesy of SUBARU OF AMERICA, INC.

CHECK HARNESS BETWEEN ECM AND FUEL PRESSURE SENSOR CONNECTOR.
1. Turn the ignition switch to OFF.
2. Disconnect the connector from the fuel pressure sensor.
3. Disconnect the connector from ECM.
4. Measure the resistance between ECM and engine ground.
  Connector & terminal
  
  (E158) No. 6 - Engine ground:
Is the resistance 1 MΩ or more?
- Yes: Replace the fuel pressure sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Fuel Pressure Sensor .
- No: Repair the ground short circuit of harness between ECM and fuel pressure sensor connector.