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Home >> Subaru >> 2003 >> Forester F4-2.5L SOHC >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Description and Operation
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Emission Control Systems: Description and Operation

System Overview




There are three emission control systems which are as follows:
- Crankcase emission control system
- Exhaust emission control system
- Three-way catalyst system
- Air/fuel (A/F) control system
- Ignition control system

- Evaporative emission control system
- On-board refueling vapor recovery (ORVR) system