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Home >> Mazda >> 2019 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 3) >> DTC P0091-00: Fuel Pressure Regulator Control Circuit Low Input >> Related PIDs
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Related PIDs

PID CONDITION SPECIFICATION

Item (definition) Unit/Condition Definition Condition/Specification (Reference)
FUEL_PRES KPa {MPA}, mBar {BAR}, psi, in H20 Fuel pressure input from high fuel pressure sensor
  • Displays fuel pressure
V High fuel pressure sensor voltage Ignition switched ON (engine off)
  • Fuel pressure is approx. 16.91 MPa {172.4 kgf/cm 2 , 2453 psi}: Approx. 2.91 V Idle (after warm up)
  • Fuel pressure is 3.44-3.95 MPa {35.1-40.2 kgf/cm 2 , 499-572 psi}: 0.98-1.05 V (ECT is 90°C {194°F})