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Home >> Lexus >> 2017 >> LS 460 Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (P1340-P11ED) & Circuit Tests >> SFI System >> DTC P0191: Fuel Rail Pressure Sensor Circuit Range / Performance [09/2016 - ] >> Description
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DTC P0191: Fuel Rail Pressure Sensor Circuit Range / Performance [09/2016 - ]: Description

Refer to DTC P0192.

Refer to WIRING DIAGRAM

DTC No. DTC Detection Condition Trouble Area
P0191 Either of following conditions is met (2 trip detection logic):
  • When target high pressure side fuel pressure changes, the change in fuel pressure sensor value is abnormal.
  • Although engine has been stopped and left as is for a long time, high pressure side fuel pressure is higher or lower than threshold.
  • Fuel pressure
  • Fuel delivery pipe sub-assembly (fuel pressure sensor)
  • Open or short in fuel pressure sensor circuit
  • ECM