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Home >> Hyundai >> 2006 >> Accent Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC Troubleshooting Procedures >> DTC P0171 System Too Lean (Bank 1) >> Monitor SCANTOOL Data
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Monitor SCANTOOL Data

  1. Connect scantool to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Monitor the "Parameters related to air/fuel ratio (HO2S, MAF, MAP, TPS, ECTS, PCSV, Injector, etc.)" on the scantool.
    Fig 1: [Scantool Display - Air/Fuel Ratio Parameters]
    G04801661
  4. Are the parameters displayed correctly?

    YES  : --> Fault is intermittent caused by poor contact in the sensor's and/or ECM/PCM's connector or was repaired and ECM/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  : --> Go to "TERMINAL AND CONNECTOR INSPECTION " procedure

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