Brief description: Notes

WARNING: This page is about a different car, the 2003 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Certain markets have legal requirements governing emissions that are released into the air when refuelling (emission legislation varies on different markets). Hydrocarbons that evaporate in conjunction with refuelling must be handled by the car and not released in to the air. Cars on certain regulated markets are equipped with a system called ORVR (On-board Refuelling Vapor Recovery), which takes care of the fuel vapor that is released while refuelling. The fuel vapor is collected in an evaporative emission canister through which air passes while the car is being driven to transport the petrol vapor back to the intake system for igniting in the engine.

It is important to ensure the integrity of the tank and its components to prevent emissions into the air. The evaporative emission system has therefore been designed to detect any leaks. A leak corresponding to a hole larger than 0.5 mm (0.020") in diameter must be detected by the evaporative emission system. See TANK INTEGRITY DIAGNOSIS .