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Home >> Kia >> 2021 >> Soul X Line >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (6 Of 6) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open Bank 1 Sensor 1 >> Wiring Inspection >> Basic Inspection >> Inspection Procedure

Inspection Procedure

  1. Check fuses and relays.
  2. Check battery terminals and charge status.
  3. Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

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