S80 AWD V8-4.4L VIN 85 B8444S (2008)
(DTC) information).
Regulating the adaptive cruise control
See Design and Function, Forward Sensing Module (FSM).
Fuel trim
Overview
Fuel trim reduces exhaust emissions. Fuel trim reduces nitrous oxides (NOx), carbon monoxide (CO) and hydrocarbon (HC) emissions.
Theoretically, if the correct amount of oxygen is added during combustion, fuel can be converted to water (H2O) and carbon dioxide (CO2). Emissions
would then be completely safe.
In practice considerable amounts of hydro-carbons (HC) and varying amounts of carbon monoxide (CO) and carbon dioxide (CO2) remain.
Due to the high temperature and pressure, nitrous oxides such as NO and NO2 are also formed. The common designation for these gases is nitrous
oxides NOx.
By speeding up the reaction between the remaining reactive components using a catalytic converter, these can be converted to water (H2O), carbon