Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 4) >> DTC P0091-00: Fuel Pressure Regulator Control Circuit Low Input >> Related PIDs

Related PIDs

Item (definition) Unit/Condition Definition Condition/Specifica (Reference)
FUEL_PRES KPa, mBar, psi, in H20 Fuel pressure input from fuel pressure sensor
  • Displays fuel pressure
V Fuel pressure sensor voltage Ignition switched ON (engine off) 
  • Fuel pressure is approx. 3.6 MPa {37 kgf/cm2 , 522 psi}: Approx. 1.01 V (ECT is 92 °C {198 °F})

Idle (after warm up) 

  • Fuel pressure is approx. 3.45 MPa {35.2 kgf/cm2 , 500 psi}: Approx. 1 V (ECT is 92 °C {198 °F})

Racing (Engine speed is 2, 000 rpm) 

  • Fuel pressure is approx. 3.21 MPa {32.7 kgf/cm2 , 466 psi}: Approx. 0.96 V (ECT is 86 °C {187 °F})

Racing (Engine speed is 4, 000 rpm) 

  • Fuel pressure is approx. 5.59 MPa {57.0 kgf/cm2 , 811 psi}: Approx. 1.29 V (ECT is 84 °C {183 °F})
LOAD % Ratio of actual amount of intake air to the maximum air charging amount (mass volume) of cylinder
  • Idle (after warm up): Approx. 27.05% (ECT is 91 °C {196 °F})
  • Racing (engine speed is 2, 000 rpm): Approx. 16.86% (ECT is 89 °C {192 ° F})
  • Racing (engine speed is 4, 000 rpm): Approx. 17.64% (ECT is 87 °C {189 ° F})
RPM RPM Engine speed
  • Displays engine speed