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S80 Base
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control Module (ECM) - Specifications, Other
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Engine Control Module (ECM) (B8444S; 2007-2010)
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Description Of Parameters
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Parameters, Value
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Front Heated Oxygen Sensor (Ho2S), Signal Bank X
Front Heated Oxygen Sensor (Ho2S), Signal Bank X
Measurement range: 0 - 2.
Normal value is λ=1.
At rich mixture is λ < 1.
At lean mixture is λ > 1.