General Information

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

Component Location





General Description

The Low Pressure Pump (LPP) supplies 65 psi(4.5 bar) of fuel pressure to the High Pressure Pump (HPP).
Using the internally located Fuel Pressure Regulator Valve (FPR), the HPP will boost the fuel pressure from 580 psi(40 bar) at idle to a maximum of 1958 psi(135 bar).
The Fuel Pressure Sensor (FPS) confirms the fuel pressure and returns the signal to the Powertrain Control Module (PCM).
Fuel pressure during limp-home mode is 65 psi(4.5 bar).

DTC Description

P0193 is set when the Fuel Pressure Sensor (FPS) circuit shorts to power.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram





Signal Waveform & Data




- Normal idle state.




- Sample: P0193 setting when the Signal Circuit of Fuel Pressure Sensor shorts to power.