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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 >> Component Inspection
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Component Inspection

Inspection Condition (+) Probe (-) Probe Reference
Connector Terminal Connector Terminal
  1. Engine "ON" (Warm up condition).
HO2S (Bank1, Sensor1) connector 1 (nernst voltage) HO2S (Bank1, Sensor1) connector 3 (virtual ground) Fig.1
HO2S (Bank1, Sensor1) connector 4 (trim resistor) HO2S (Bank1, Sensor1) connector 6 (pumping current)
G13292360Courtesy of KIA MOTORS AMERICA, INC.

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