DTC P0192

DTC P0192  : Fuel Rail Pressure Sensor Circuit Low Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016),  or How to Troubleshoot the A/T System (2014 2015),  or How to Troubleshoot the Fuel and Emissions Systems .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   - 2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   FUEL PRESSURE CONVERTED FROM PF SENSOR	Less than 0.31	V

   Do the current condition(s) match the threshold?

   YES 

   The failure is duplicated. Go to step 2.

   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. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

2. Determine possible failure area (PF line, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Fuel rail pressure sensor 3P connector

   - 3. Turn the vehicle to the ON mode.

   - 4. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   FUEL PRESSURE CONVERTED FROM PF SENSOR	Less than 0.31	V

   Do the current condition(s) match the threshold?

   YES 

   Go to step 3.

   NO 

   Go to step 4.

3. Shorted wire check (PF line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Jump the SCS line with the HDS

   - 3. Disconnect the following connector.

   PCM connector B (51P) - Refer to: How to Troubleshoot the A/T System (2014 2015),  or How to Troubleshoot the Fuel and Emissions Systems,  or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016)

   - 4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Fuel rail pressure sensor 3P connector: disconnected
   	PCM connector B (51P): disconnected
   Test circuit	PF
   Test point 1	Fuel rail pressure sensor 3P connector No. 1 (WHT)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short in the PF wire between the PCM (B35) and the Fuel rail pressure sensor.

   NO 

   The PF wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2016) .

4. Determine possible failure area (Fuel rail pressure sensor, others)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Fuel rail pressure sensor 3P connector: disconnected
   Test circuit	VCC1, SG1
   Test point 1	Fuel rail pressure sensor 3P connector No. 2 (BLU)
   Test point 2	Fuel rail pressure sensor 3P connector No. 3 (PNK)

   Courtesy of HONDA, U.S.A., INC.

   Is there about 5.0 V?

   YES 

   Replace the fuel rail .

   NO 

   Go to step 5.

5. Open wire check (VCC1 line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Jump the SCS line with the HDS.

   - 3. Disconnect the following connector.

   PCM connector C (51P) - Refer to: How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016),  or How to Troubleshoot the Fuel and Emissions Systems,  or How to Troubleshoot the A/T System (2014 2015)

   - 4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Fuel rail pressure sensor 3P connector: disconnected
   	PCM connector C (51P): disconnected
   Test circuit	VCC1
   Test point 1	Fuel rail pressure sensor 3P connector No. 3 (PNK)
   Test point 2	PCM connector C (51P) No. 32 (PNK)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The VCC1 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2016), or PCM Removal and Installation (2014 2015) .

   NO 

   Repair an open in the VCC1 wire between the PCM (C32) and the fuel rail pressure sensor.