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Home >> Kia >> 2017 >> Soul Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (1 Of 3) >> DTC P0091: Fuel Pressure Regulator 1 Control Circuit Low >> DTC Inspection >> Monitor KDS/GDS Data
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Monitor KDS/GDS Data

  1. Connect KDS/GDS to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Check the "Current Data"  for about related DTC with KDS/GDS.
    Fig 1: Scantool Display - Engine Idle After Warm Up/Approx 2000RPM During Acceleration
    G12211731Courtesy of KIA MOTORS AMERICA, INC.
    1. Engine idle after warm up (approx. 4.000MPa = approx. 40bar)
    2. Approx. 2000RPM (approx. 4.000MPa = approx. 40bar)
    3. During acceleration (fuel pressure increases proportionally while accelerating)
  4. Are the parameters displayed correctly?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair " procedure.

    NO 

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