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Forester XT Touring
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Repair and Diagnosis
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Different variant/trim
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Section 14 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO))
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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
WARNING:
This page is about a different variant/trim than selected.
Fig 1: Front Oxygen (A/F) Sensor Heater Output Voltage Graph
Courtesy of SUBARU OF AMERICA, INC.