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2001
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Eclipse RS, Automatic
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DTC P0154: Front Heated Oxygen Sensor (Ho2S) Circuit No Activity Detected (Bank 2 Sensor 1)
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Probable Causes
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Probable Causes
Left front HO2S deteriorated.
Open circuit in left front HO2S output line or ground line.
Engine Control Module/Powertrain Control Module (ECM/PCM) failed.