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Home >> Kia >> 2021 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (1 Of 6) >> DTC P0091-00: Fuel Pressure Regulator 1 Control Circuit Low >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical check
  • Poor connector connection
  • Short to ground in control circuit
  • FPCV
Enable Condition
  • Normal auxiliary battery voltage (10 to 16V)
Threshold Value
  • Short circuit to ground (ECU power stage diagnosis)
Diagnostic Time
  • Continuously
MIL ON Condition
  • 2 driving cycles
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