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Home >> Hyundai >> 2018 >> Ioniq Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) (PHEV) >> DTC P2237: O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1) >> Wiring Inspection >> Pumping Current Circuit Inspection

Pumping Current Circuit Inspection

  1. IG "OFF" and disconnect HO2S (S1) connector and ECM connector.
  2. Check resistance between Pumping Current terminal of HO2S (S1) Connector and Pumping Current terminal of ECM connector.

    Specification:  Below 1Ω

  3. Is the measured resistance within specification?

    YES 

    NO 

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