Component Location
General Description

Fuel rail pressure sensor is mounted to fuel rail and it senses fuel rail pressure.

GDI ECM/PCM operates fuel pressure control valve with the signal from fuel rail pressure sensor to control optimized RPM and rail pressure.

DTC Description

If sensor signal input is higher than 4.7V during 0.5 sec, ECM/PCM sets DTC P0193.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Signal check, high

1.

Poor connection

2.

Open or short to power in signal circuit

3.

Open in ground circuit

4.

FPS

Threshold Value

•

Sensor voltage > 4.9V

Diagnostic Time

•

0.5 sec.

MIL ON Condition

•

3 driving cycle

Diagnostic Circuit Diagram
Signal Waveform and Data

Fig 1) Normal waveform of FPS at acceleration.

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