DTC P0193-00: Fuel Pressure Sensor Circuit High Input: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0193:00	Fuel pressure sensor circuit high input
DETECTION CONDITION	If the input voltage at the PCM terminal 1CA is more than 4.86 V for 5 s  , the PCM determines that the fuel pressure sensor circuit is high. Diagnostic support note  This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Stops the high pressure fuel pump control. Limits the intake air amount.
POSSIBLE CAUSE	Fuel pressure sensor connector or terminals malfunction PCM connector or terminals malfunction Fuel pressure sensor malfunction Short to power supply in wiring harness between fuel pressure sensor terminal B and PCM terminal 1CA Open circuit in wiring harness between the following terminals: Fuel pressure sensor terminal B-PCM terminal 1CA Fuel pressure sensor terminal A-PCM terminal 1CB PCM malfunction

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

RELATED PIDS

Monitor item (Definition)	Unit/Condition	Condition/Specification (Reference)
FUEL_PRES	KPa {MPa}, mBar {Bar}, psi, in H20	Displays the fuel pressure
	V	Fuel pressure is 3.0 MPa {31 kgf/cm 2  , 435 psi}: approx. 0.92 V  Fuel pressure is 4.8 MPa {49 kgf/cm 2  ,696 psi}: approx. 1.17 V