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Tribeca
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Repair and Diagnosis
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Engine Performance
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Diagnostic Trouble Code Detecting Criteria
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0031 Ho2S Heater Control Circuit Low (Bank 1 Sensor 1)
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Component Description
Component Description
Fig 1: Front Oxygen (A/F) Sensor Heater Output Voltage Graph
Courtesy of SUBARU OF AMERICA, INC.
Courtesy of SUBARU OF AMERICA, INC.