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2006
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Verona Base
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Repair and Diagnosis (Single Page)
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Engine Performance
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Testing & Diagnosis
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Engine Control System - DTC P0030 Through P0175
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DTC P0040: HO2S Signals Swapped Bank 1 and 2 Sensor 1
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Conditions for Setting the DTC
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Conditions for Setting the DTC
No oxygen sensor, ignition coil, misfire faults exist. The ECM detects the HO2S signal voltages are heading in the opposite direction of what was expected.