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Home › Hyundai › 2012 › Azera › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 3) › DTC P0191: Fuel Rail Pressure Sensor Circuit Range/Performance › General Information › DTC Detecting Condition

General Information: DTC Detecting Condition

Item Detecting Condition Possible cause
DTC Strategy
  • Detects abnormal sensor signal
  1. Poor Connection
  2. Fuel rail pressure sensor
  3. PCM
Enable Conditions
  • Normal spill valve status
  • Engine Running (idle state)
  • Engine running more than 5 sec.
Threshold value
  • The average value from fuel rail pressure sensor is out of range of threshold value
Diagnosis Time
  • 0.6 sec.
MIL On Condition
  • 2 Drive Cycles
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