LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2002 >> Santa Fe Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.4L >> Diagnostic Tests >> DTC P0401: Exhaust Gas RECIRCULATION Flow Insufficient Detected >> Scantool Diagnostics >> Monitor Scantool Data
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitor Scantool Data

  1. Ignition "OFF".
  2. Connect Scantool and Engine "ON".
  3. Monitor the HO2S parameters and signal waveform on scantool.
    Fig 1: Scan Tool Screen Display - Current Data (Oxygen Sensor Bank 1)
    G07324783
  4. Are those HO2S1 and HO2S2 within specifications?

    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

scientia non olet · About LEMON Manuals