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DTC P0089:00: Notes

DTC P0089:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P0089:00 Fuel pressure regulator performance problem
DETECTION CONDITION 
  • The PCM monitors the actual fuel pressure (high-pressure side) using the fuel pressure sensor. The PCM compares the fuel pressure of the target that is calculated based on charging efficiency and engine speed and actual fuel pressure. The PCM detects that the difference of fuel pressures is above threshold or below threshold, the PCM determines that the spill valve control solenoid valve has a deterioration.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Air suction in fuel line due to fuel runout
  • Improper operation of fuel pump speed control system
  • High pressure fuel pump connector or terminals malfunction
  • Fuel pressure sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Fuel pressure sensor malfunction
  • High pressure fuel pump malfunction
  • Spill valve control solenoid valve malfunction
  • Insufficient fuel pressure (low pressure line)
  • Fuel injector malfunction (fuel leakage)
  • Fuel pressure limiter malfunction
  • PCM malfunction
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