DTC P0192: Fuel Rail Pressure Sensor Circuit Low Bank 1: Notes
1. -
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
- Improper idling
- Poor driving performance
Wiring diagram:
Engine Electrical system. Refer to WIRING SYSTEM>Engine Electrical System .
CAUTION:
Use the check board when measuring the ECM terminal voltage and resistance. Refer to ENGINE (DIAGNOSTICS) (H4DO)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD
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NOTE:
After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Refer to ENGINE (Diagnostics) (H4DO)>Basic Diagnostic Procedure>PROCEDURE
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- CHECK DATA MONITOR
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- Turn the ignition switch to ON.
- Using the Subaru Select Monitor or a general scan tool, perform the clear memory of [Engine]. Refer to COMMON (DIAG)>CLEAR MEMORY .
- Turn the ignition switch to OFF.
- Start the engine.
- Using the Subaru Select Monitor, read the value in [Fuel Rail Pressure A].NOTE: For detailed operation procedures, refer to "Common (Diagnostics)". Refer to COMMON (DIAG)>DATA MONITOR .
Is the value of [Fuel Rail Pressure A] approx. 0 [kPa] (0 psi)?
Yes : Go to 2.
No : Refer to "Check non-permanent occurrence malfunctions". Refer to ENGINE (Diagnostics) (H4DO)>General Description>INSPECTION>CHECK NON-PERMANENT OCCURRENCE MALFUNCTIONS .
- CHECK HARNESS AND CONNECTOR BETWEEN ECM AND FUEL PRESSURE SENSOR CONNECTOR (SHORT TO GROUND)
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- Turn the ignition switch to OFF.
- Disconnect the connector from ECM.
- Disconnect the connector from the fuel pressure sensor.
- Measure the resistance between the ECM connector and engine ground.
Connector & terminal
(E53) No. 56 - Engine ground:
Is the resistance 1 MΩ or more?
Yes : Replace the fuel pressure sensor. Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Pressure Sensor .
No : Repair the ground short circuit of harness between ECM connector and fuel pressure sensor connector.