General Information

Engine Control
P0193 Fuel Rail Pressure Sensor Circuit High Input - General Information

Component Location





General Description

Fuel rail pressure sensor is mounted to fuel rail and it senses fuel rail pressure.
GDI PCM operates fuel pressure regulator (spill 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 4.8V during 2.5 sec, PCM sets DTC P0193.

DTC Detecting Condition





Diagnosic Circuit Diagram





Signal Waveform & Data












Fig.1) Normal waveform of rail pressure sensor at idle.
Fig.2) Normal waveform of rail pressure sensor at acceleration.