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Diagnostic Trouble Code – P0148

Description

P0148 – Deviation between Fuel Pressure Set Point and Actual Fuel Pressure

Possible Causes

  • Other DTCs present
  • Fuel leaks
  • Fuel control actuator
  • Fuel pressure sensor
  • Cascade overflow valve
  • Check valve damaged or blocked
  • Fuel return line obstruction, damage, or debris
  • Lift pump flow
  • Air in fuel system
  • Leaking fuel injectors or high-pressure connectors
  • Pressure limiting valve
  • High-pressure fuel pump
  • Intermittent condition
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