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Home >> Subaru >> 2004 >> Outback F4-2.5L SOHC >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Exhaust Gas Recirculation >> Description and Operation
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Exhaust Gas Recirculation: Description and Operation

Exhaust Gas Recirculation (EGR) System

GENERAL




- The EGR system aims at reduction of NOx by lowering the combustion temperature through re-circulation of a part of exhaust gas into cylinders via the intake manifold.

- The EGR valve is controlled by the ECM according to the engine operating