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2017
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Legacy 3.6R Limited
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Repair and Diagnosis
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Different variant/trim
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Section 12 (Engine Control System (Diagnostics) (P000A To P015B) (H4DO))
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC P0031: A/F/O2 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 Signal Waveform - (Bank 1 Sensor 1)
Courtesy of SUBARU OF AMERICA, INC.