P0192

DTC Troubleshooting: P0192

DTC P0192: Fuel Rail Pressure Sensor Circuit Low Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Check the FUEL RAIL PRESSURE SENSOR in the DATA LIST with the HDS.

Is there about 0.23 V or less?
YES - Go to step 3.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the fuel rail pressure sensor and the PCM.


3. Turn the ignition switch to LOCK (0).

4. Disconnect the fuel rail pressure sensor 3P connector.

5. Turn the ignition switch to ON (II).

6. Check the FUEL RAIL PRESSURE SENSOR in the DATA LIST with the HDS.

Is there about 0.23 V or less?
YES - Go to step 8.

NO - Go to step 7.


7. Measure the voltage between fuel rail pressure sensor 3P connector terminals No. 1 and No. 3.

Is there about 5 V?
YES - Go to step 16.

NO - Go to step 12.






8. Turn the ignition switch to LOCK (0).

9. Jump the SCS line with the HDS.

10. Disconnect PCM connector C (44P).

11. Check for continuity between fuel rail pressure sensor 3P connector terminal No. 2 and body ground.

Is there continuity?
YES - Repair short in the wire between the PCM (C10) and the fuel rail pressure sensor, then go to step 18.

NO - Go to step 23.






12. Turn the ignition switch to LOCK (0).

13. Jump the SCS line with the HDS.

14. Disconnect PCM connector A (44P).

15. Check for continuity between fuel rail pressure sensor 3P connector terminal No. 1 and PCM connector terminal A19.

Is there continuity?
YES - Repair open in the wire between the PCM (A19) and the fuel rail pressure sensor, then go to step 18.

NO - Go to step 23.






16. Turn the ignition switch to LOCK (0).

17. Replace the fuel rail pressure sensor. Fuel Rail Pressure Sensor Replacement

18. Reconnect all connectors.

19. Turn the ignition switch to ON (II).

20. Reset the PCM with the HDS.

21. Do the PCM idle learn procedure. ECM/PCM Idle Learn Procedure

22. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0192 indicated?
YES - Check for poor connections or loose terminals at the fuel rail pressure sensor and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


23. Reconnect all connectors.

24. Update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Initial Inspection and Diagnostic Overview

25. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0192 indicated?
YES - Check for poor connections or loose terminals at the fuel rail pressure sensor and the PCM. If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then recheck. If the PCM was substituted, go to step 1.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. Service and Repair If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.