DTC P0190 Fuel Rail Pressure Sensor Circuit; DTC P0192 Fuel Rail Pressure Sensor Circuit Low Input; DTC P0193 Fuel Rail Pressure Sensor Circuit High Input: Description
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 and 132.6 kgf/cm, 2, 580 and 1,885 psi). If the sensor output stops, the ECM will stop the high pressure side fuel pump and supply fuel using the low pressure side fuel pump.
The fuel pressure sensor is installed on a fuel delivery pipe and detects the fuel pressure. It controls feedback of the pump discharge in order to keep the fuel within the target pressure range between 4 and 13 MPa (40.8 and 132.6 kgf/cm2 , 580 and 1,885 psi) by the ECM.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0190 | Open or short in fuel pressure sensor circuit for 5 seconds or more (1 trip detection logic) |
|
| P0192 | Short in fuel pressure sensor circuit for 5 seconds or more (1 trip detection logic) |
|
| P0193 | Open in fuel pressure sensor circuit for 5 seconds or more (1 trip detection logic) |
|
HINT:
After confirming DTC P0190, use the intelligent tester to confirm the fuel pressure in the delivery pipe by following menus DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / FUEL PRESS.
| Fuel Pressure (MPa) | Malfunction |
|---|---|
| Approximately 0 |
|
| 19.6 or more |
|