P0192
DTC P0190 Fuel Rail Pressure Sensor CircuitDTC P0192 Fuel Rail Pressure Sensor Circuit Low Input
DTC P0193 Fuel Rail Pressure Sensor Circuit High Input
DESCRIPTION
DTC Detection Condition:
The fuel pressure sensor is installed on the delivery pipe. The sensor changes fuel pressure to an electrical signal and sends the signal to the ECM. Then the ECM controls the feedback of the pump discharge to maintain the fuel's target pressure between 4 and 13 MPa (40.8 to 132.6 kgf/sq.cm, 580 to 1885 psi). If the sensor output stops, the ECM will stop the fuel pump for high pressure and supply fuel using the low pressure side fuel pump.
HINT: After confirming DTC P0190, use the intelligent tester or Techstream to confirm the fuel pressure in the delivery pipe by entering the following menus:
- Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / FUEL PRESS.
- Techstream - Select: Powertrain / Engine / Data List / All Data / Fuel Press.
MONITOR DESCRIPTION
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
Component Operating Range:
These DTCs are set if the fuel pressure sensor output voltage is out of the standard range. The DTCs stand for an open or short malfunction of the sensor circuit.
If these DTCs are set, the ECM enters fail-safe mode and limits the engine power. Fail-safe mode continues until the engine switch is turned off.
Wiring Diagram:
Step 1:
Step 1(Continued)-3:
Step 4:
INSPECTION PROCEDURE
HINT: Read freeze frame data using the intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.