Oxygen Sensor Engine Rich *Codes* A U

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HO2S Bank 1 Sensor 1 Signal Above 0.45v (A/F Ratio Too Rich)

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Lack Of HO2S Switch - Sensor Indicates Rich

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Lack Of HO2S Switch - Sensor Indicates Rich

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Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. 1

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Sensor of catalyst temperature

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Fuel rail pressure

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HO2S Circuit Low Variance Bank 2 Sensor 1

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H02S Circuit Low Variance Bank 2 Sensor 1

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H02S Circuit Low Variance Bank 2 Sensor 1

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O2 Sensor Heater Control Circuit (Bank 1 Sensor 1)

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O2 Sensor Heating Circ.,Bank1+2-Sensor1 Short to B+

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