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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 6) (HEV) >> DTC P0090-00: Fuel Pressure Regulator 1 Control Circuit Open >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Monitoring
  1. Poor Connector Connection
  2. Open in Fuel Pressure Regulator Circuit
  3. Faulty Fuel Pressure Regulator
Enable Conditions
  • Battery voltage higher than 10V and lower than 16V
  • Engine speed lower than 4000 rpm
Threshold Value
  • Open circuit
Diagnostic Time
  • Continuous
Mil On Condition
  • 2 Driving Cycles
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