1A
DTC P0190: Fuel Pressure Sensor Circuit Malfunction
NOTE:
• Priority when dealing with a number of faults:
If DTC P0190 and DTC P0641 are detected, deal with DTC P0641 Sensor Reference Voltage 1 Circuit/Open first.
• Fault finding procedure application conditions for stored DTC:
The DTC is declared present after the engine started.
• If DTC P0190 is detected, the engine stops and impossible to restart.
Detecting Condition
NOTE:
Generic scan tool displays status with * mark only.
Status displayed on SUZUKI scan tool Detecting condition Indicator / Warning light operation
*CC0 Short circuit to ground Red stop warning light (gravity 2 fault) light up
*CO1 Open circuit or short circuit to 12 V
*D1 Inconsistency Does not light
*D2 Above maximum threshold Red stop warning light (gravity 2 fault) light up
*D3 Below minimum threshold
D4 Value out of range Does not light
Troubleshooting
Check the connection and condition of the connector of the fuel pressure sensor.
Repair if necessary.
Check the connection and condition of ECM “C47” connector.
Repair if necessary.
Check for insulation, continuity and absence of interference resistance of the connections:
• Between “ORN” wire of fuel pressure sensor connector and “C47-15” terminal of ECM connector
• Between “RED/BLK” wire of fuel pressure sensor connector and “C47-25” terminal of ECM connector
• Between “BLK” wire of fuel pressure sensor connector and “C47-35” terminal of ECM connector
Repair if necessary.
If DTC P0190 is still detected, replace the rail.
If DTC P0190 is still detected, replace the ECM.
After Repair
Deal with any faults detected by SUZUKI scan tool.
Clear the DTC.
Carry out a road test followed by another check with the SUZUKI scan tool.