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Home >> Hyundai >> 2016 >> Azera Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0451: Evaporative Emission System-Pressure Sensor Range / Performance >> Component Inspection

Component Inspection

  1. IG "OFF" & connect GDS.
  2. ENG "ON" and Race the accelerator pedal at idle and Monitor "FTPS" parameter is changing while PCSV is operating on the service data.

    Specification:  Fuel Tank Pressure is O.K if pressure changes more than 0.2 while racing accelerator pedal.

    Fig 1: Screen Display - Sample Data At Idle With No Acceleration
    G10373587Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Screen Display - Sample Data At Idle With Acceleration
    G10373588Courtesy of HYUNDAI MOTOR AMERICA
  3. Does the FTPS change while racing the accelerator pedal at idle?

    YES 

    NO 

    • Substitute with a known - good FTPS and check for proper operation. If the problem is corrected, replace FTPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.