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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 3) (Except HEV)) >> DTC P0191: Fuel Rail Pressure Sensor Circuit Range Performance >> DTC Inspection >> GDS data analysis

GDS data analysis

WARNING: This page is about a different variant/trim than selected.
  1. Connect GDS and select "Current Data" mode
  2. Warm up the engine.
  3. Monitor the parameters related to DTC on the "Current Data" menu of the GDS below while press and depress gas pedal.
    Fig 1: Screen Display - Service Data Review Related With Fuel Pressure Sensor At Idle And Acceleration
    G11992433Courtesy of HYUNDAI MOTOR AMERICA

    (Inspect low pressure fuel line between fuel pump and high pressure pump first when the pressure of low pressure line is displayed low at idle.)

  4. Is parameter displayed within specifications?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Go to next step.
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