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Forester X, Automatic Trans
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Engine Performance
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Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
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Component Description
Component Description
Fig 1: Air Fuel Ratio Graph No Activity Detected (Bank 1 Sensor 1)
Courtesy of SUBARU OF AMERICA, INC.
Courtesy of SUBARU OF AMERICA, INC.