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Home › Hyundai › 2016 › Equus Signature › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 3) › DTC P0090: Fuel Pressure Regulator 1 Control Circuit/Open › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal check
  1. Poor connection
  2. Short to ground in control circuit
  3. FPR (B1)
Enable Conditions
  • B+ 10V ~ 16V
Threshold value
  • Open
Diagnosis Time
  • Continuous
MIL On Condition
  • 2 driving cycle
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