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Home >> Kia >> 2012 >> Optima SX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) - 2.0L >> DTC P2237: O2 Sensor Pumping Current Circuit Open (Bank 1/Sensor 1) >> General Information >> Diagnostic Circuit Diagram
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Diagnostic Circuit Diagram

Fig 1: Oxygen Sensor Circuit Diagram
G07382932Courtesy of KIA MOTORS AMERICA, INC.