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 Conditions:
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 at 4 to 13 MPa (40.8 to 132.6 kgf/cm, 2, 580 to 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 of feedback the pump discharge in order to keep the fuel at target pressure 4 to 13 MPa (40.8 to 132.6 kgf/ sq.cm, 580 to 1,885 psi) by the ECM.
HINT: After confirming DTC P0190, use intelligent tester to confirm the fuel pressure in the delivery pipe in DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / FUEL PRESS.
MONITOR DESCRIPTION
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
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 to off.
Wiring Diagram:
Step 1:
Step 1(Continued)-3:
Step 4:
Step 5:
INSPECTION PROCEDURE
HINT:
- If different DTCs related to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.
- Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions 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.