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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Engine Control System Diagnosis - 1.6L (1 Of 3) (Except HEV)) >> DTC P0191: Fuel Rail Pressure Sensor Circuit Range/Performance >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Rationality check
  1. Poor connection
  2. FPS
Case 1 Enable Conditions
  • Sensor Output Voltage is between 0.2V and 4.85V
Threshold Value
  • Sensor Output Voltage Jump time is lower than 0.06sec
Diagnostic Time
  • 1 sec
Case 2 Enable Conditions
  • Deviation value of air fuel ratio control is lower than -6%
  • Fuel adaptive value of Multiplicative fuel adoption range is lower than 0.8
  • Average value of fuel rail is lower than 0.13 MPa
Threshold Value
  • Average value of fuel rail is lower than 0.1 MPa
Diagnostic Time
  • 6 sec
Case 3 Enable Conditions
  • Deviation value of air fuel ratio control is higher than 6%
  • Fuel adaptive value of Multiplicative fuel adoption range is higher than 1.2
  • Soaking Time is higher than 4hr
  • IG ON (Before engine start)
Threshold Value
  • Average value of fuel rail is higher than 1.3 MPa
Diagnostic Time
  • Immediate
Mil On Condition
  • 2 Drive Cycle
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