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 I: Description
The fuel pressure sensors located on the delivery pipe (fuel rail) detects the fuel pressure as voltages. The engine control module (ECM) applies a 5-volt reference voltage to the sensor The sensor varies the voltage between 0 5V and 4.5 V in accordance with the fuel pressure. The ECM calculates the fuel pressure by the sensor voltage, and regulates the fuel pressure for the direct fuel injection system. If the sensor has a malfunction, the ECM aborts the direct fuel injection
DTC DETECTION CONDITION CHART
| 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 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 and ECT / Data List / All Data / Fuel Press.
MALFUNCTION REFERENCE
| Fuel Pressure (MPa) | Malfunction |
|---|---|
| Approximately 0 | PR, E2 circuit short |
| 19 6 or more |
|