Front oxygen sensor circuit malfunction (short circuit)

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Oxygen Sensor Engine Lean *Codes* A U

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HO2S Bank 1 Sensor 1 Signal Below 0.45v (A/F Ratio Too Lean)

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GLOW PLUG MODULE VOLTAGE SUPPLY

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GLOW PLUG MODULE INTERNAL FAULT

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Lack Of HO2S Switch - Sensor Indicates Lean

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Lack Of HO2S Switch - Sensor Indicates Lean

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

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HO2S Circuit Low Variance Bank 1 Sensor 2

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HO2S Circuit Low Variance Bank 1 Sensor 2

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HO2S Circuit Low Variance Bank 1 Sensor 2

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Bank2-Sensor1 Internal Rsistance too High

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