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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 P0037: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) >> 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.
    Fig 1: Screen Display - Parameters Related To DTC On Current Data Menu Of GDS
    G11992266Courtesy of HYUNDAI MOTOR AMERICA
    • Off duration O2 sensor heating downstream value is 93.8% before O2 sensor being ready.
    • Off duration O2 sensor heating downstream value is 59.8% after O2 sensor being ready.
    Fig 2: Screen Display - Normal Data After Engine Start (Water Temperature 63.0°C)
    G11992267Courtesy of HYUNDAI MOTOR AMERICA
  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.