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Home › Kia › 2009 › Rio Base, Standard › Repair and Diagnosis › Engine Performance › System › DTC Troubleshooting Procedures (1 Of 2) › DTC P0171 System Too Lean (Bank 1) › Monitor Scan Tool Data

Monitor Scan Tool Data

  1. Connect scan tool 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 scan tool.
    Fig 1: Monitoring Parameter Related To Air/Fuel Ratio
    G04862176Courtesy of KIA MOTORS AMERICA, INC.
  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 

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