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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Engine Control System Diagnosis - 1.6L (2 Of 3) (Except HEV)) >> DTC P0451: Evaporative Emission System-Pressure Sensor Range/Performance >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  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.

  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.
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