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DTC P0088: Fuel Rail / System Pressure - Too High: Description

Refer to DTC P0087  .

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0088 ECM did not command fuel pump for high pressure to open spill valve, but fuel pressure increases 3000 kPa (30 6 kgf/cm2 , 435 psi) from target pressure for more than 10 seconds (1 trip detection logic)
  • Fuel pump (for High Pressure of Bank 1)
  • Fuel pump (for High Pressure of Bank 2)
  • RELIEF VLV fuse
  • Engine room No 2 junction block (RELIEF VLV relay)
  • Fuel relief valve circuit
  • Fuel relief valve
  • ECM
There is minimal difference between fuel pressure before and after fuel relief valve operates (2 trip detection logic)