DTC Troubleshooting: P0190
DTC P0190: Fuel Rail Pressure Sensor Circuit Out of Range
NOTE:
Before you troubleshoot, review the general troubleshooting information.
Check for damage or corrosion at the fuel rail pressure sensor connector terminals.

DTC Description
Confirmed DTC
Pending DTC
P0190 Fuel Rail Pressure Sensor Circuit Out of Range
    

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
P0190 Fuel Rail Pressure Sensor Circuit Out of Range
    

Is DTC P0190 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.
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 connectors.
Fuel rail pressure sensor 5P 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 not shorted. Go to step 3.
3.
Open wire check (PF line):

Open wire check (PF line)
?1.
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
PCM connector No. 1 (96P) No. 32


Is there continuity?

     
YES
     
     
     
The PF wire is OK. Go to step 4.
     
NO
     
     
     
Repair an open in the PF wire between PCM connector No. 1 terminal No. 32 and the fuel rail pressure sensor.?
4.
Open wire check (SG9 line):

Open wire check (SG9 line)
?1.
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. 1:
Test point 2
PCM connector No. 1 (96P) No. 78


Is there continuity?

     
YES
     
     
     
The SG9 wire is OK. Replace the fuel rail.?
     
NO
     
     
     
Repair an open in the SG9 wire between PCM connector No. 1 terminal No. 78 and the fuel rail pressure sensor.?