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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (2 Of 5) >> DTC P0451-00: Fuel Tank Pressure Sensor - Sensor Characteristic Malfunction >> PID Item/Simulation Item Used In Diagnosis

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item Definition Unit Condition/Specification
AAT Ambient air temperature °C, °F
  • Displays ambient air temperature
FTP Fuel tank pressure input from fuel tank Pa {KPA}, mBar {BAR}, psi, in H20
  • Ignition switched ON (engine off): Approx. -23 Pa {-2.3 kgf/m 2 , -0.0033 psi}
  • Idle (after warm up): -282- -46 Pa {-28.7- -4.7 kgf/m 2 , -0.0409- -0.0067 psi}
  • Racing (Engine speed 2, 000 rpm): -1.47- -0.869 kPa {-0.0149- -0.0089 kgf/cm 2 , -0.213--0.127 psi}
  • Racing (Engine speed 4, 000 rpm): -1.69- -1.07 kPa {-0.0172- -0.0110 kgf/cm 2 , -0.245--0.156 psi}
Fuel tank pressure sensor voltage V
  • Ignition switched ON (engine off): Approx. 2.6 V
  • Idle (after warm up): 2.2-2.62 V
  • Racing (Engine speed 2, 000 rpm): 1.9-1.91 V
  • Racing (Engine speed 4, 000 rpm): 1.73-1.76 V