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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (Engine Control System Diagnosis - 3.3L (2 Of 9)) >> DTC P0088-00: Fuel Rail/System Pressure - Too High >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor the fuel rail/system pressure - too high
  1. Jammed injector
  2. Mechanical failure in High Pressure Pump
  3. Sticking by high pressure of rail pressure sensor
Case 1 Enable Condition
  • Engine speed is between 512 RPM and 7008 RPM
Threshold Value
  • Filtered fuel pressure is greater than 25 mPa
Diagnosis Time
  • 2 seconds
Case 2 Enable Condition
  • Engine speed is between 512 RPM and 6816 RPM
  • Mass fuel flow is between 0.012 g/rev and 0.36 g/rev.
  • Time after engine start is greater than 15 seconds
  • Volume of fuel flow is less than 14.5~ 216 (l/h)
Threshold Value
  • Delivery of high pressure pump is too high
Diagnosis Time
  • 8 seconds
Case 3 Enable Conditions
  • Time after engine start is greater than 2 seconds
  • Volume of fuel flow is less than 14.5~216 (l/h)
  • Mass of fuel flow is greater than 0.012 g/rev.
  • Engine speed is faster than 512 RPM
Threshold Value
  • Fuel pressure during catalyst heating is too high
Diagnosis Time
  • 8 seconds
MIL On Condition
  • 2 Drive Cycles