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Rio EX, 4D Hatchback
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Repair and Diagnosis
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Engine Control System Diagnosis (2 Of 2)
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DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1)
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General Information
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Diagnostic Circuit Diagram
Diagnostic Circuit Diagram
Fig 1: Oxygen Sensor - Circuit Diagram
Courtesy of KIA MOTORS AMERICA, INC.
Fig 2: Identifying Oxygen Sensor Connector Terminals
Courtesy of KIA MOTORS AMERICA, INC.
Courtesy of KIA MOTORS AMERICA, INC.
Courtesy of KIA MOTORS AMERICA, INC.