DTC Troubleshooting: P0192
DTC P0192: Fuel Rail Pressure Sensor Circuit Low Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0192 Fuel Rail Pressure Sensor Circuit Low Voltage
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P0192 Fuel Rail Pressure Sensor Circuit Low Voltage
    

Is DTC P0192 indicated?

     
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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot.?
2.
Determine possible failure area (PF line, others):

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 5P connector

?3.
Turn the vehicle to the ON mode.

?4.
Clear the DTC with the HDS.


?5.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P0192 Fuel Rail Pressure Sensor Circuit Low Voltage
    

Is DTC P0192 indicated?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 4.
3.
Shorted wire check (PF line):

Shorted wire check (PF line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS, and wait more than 1 minute.


?3.
Disconnect the following connector.
PCM connector No. 1 (96P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Fuel rail pressure sensor 5P connector: disconnected
 
PCM connector No. 1 (96P): disconnected
Test point 1
Fuel rail pressure sensor 5P connector (female terminals) No. 2:
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short in the PF wire between PCM connector No. 1 terminal No. 32 and the fuel rail pressure sensor.?
     
NO
     
     
     
The PF wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If DTC P0192 goes away and the PCM was substituted, replace the original PCM.?
4.
Determine possible failure area (fuel rail pressure sensor, others):

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 5P connector: disconnected
Test point 1
Fuel rail pressure sensor 5P connector (female terminals) No. 1:
Test point 2
Fuel rail pressure sensor 5P connector (female terminals) No. 3:


Is there about 5.0 V?

     
YES
     
     
     
     
NO
     
     
     
Go to step 5.
5.
Open wire check (VCC1 5 line):

Open wire check (VCC1 5 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS, and wait more than 1 minute.


?3.
Disconnect the following connector.
PCM connector No. 1 (96P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Fuel rail pressure sensor 5P connector: disconnected
 
PCM connector No. 1 (96P): disconnected
Test point 1
Fuel rail pressure sensor 5P connector (female terminals) No. 3:
Test point 2
PCM connector No. 1 (96P) No. 81


Is there continuity?

     
YES
     
     
     
The VCC1 5 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If DTC P0192 goes away and the PCM was substituted, replace the original PCM.?
     
NO
     
     
     
Repair an open in the VCC1 5 wire between PCM connector No. 1 terminal No. 81 and the fuel rail pressure sensor.?