LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2017 >> Veloster Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis (1 Of 3) - 1.6L GDI >> DTC P0135: O2 Sensor Heater Circuit (Bank 1/Sensor 1) >> Component Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection

  1. IG KEY "OFF".
  2. Disconnect HO2S (S1) connector.
  3. Measure resistance between heater power and heater control terminal of HO2S (S1) (Component Side)

    Specification: 

    Item Specification
    Heater Resistance (Ω) Approx. 3.2Ω ± 0.8Ω at 20°C (68°F)
  4. Is the measured resistance within specification?

    YES 

    • Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. So, check poor connections and the related circuit between ECM and component thoroughly. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Substitute with a known - good HO2S (S1) and check for proper operation. If the problem is corrected, replace HO2S (S1) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
scientia non olet · About LEMON Manuals