Legal requirements

WARNING: This page is about a different car, the 2003 Saab 9-3 and 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

ORVR, Onboard Refueling Vapor Recovery, is a legal requirement that came into force in the USA from M98. The legal requirement governs the emission of hydrocarbons in conjunction with refuelling.

All M00 4-cyl cars are LEV (=Low Emission Vehicle).

On cars intended for markets with any legal requirements on tank integrity diagnosis, the software in T7 will turn on the CHECK ENGINE lamp. On markets without such legal requirements, the CHECK ENGINE lamp will not come on but a DTC will be generated.

Applies to all: Hydrocarbons that vaporize while refuelling must be dealt with in the car and not released into the atmosphere. Max. 0.2 g hydrocarbon per gallon of fuel may escape while refuelling 15-38 liters (4-10 gallons) of fuel per minute. The tank must be able to be filled at 15-38 liters (4-10 gallons) per minute to 95% of its total volume without the fuel nozzle shutting off too early so that subsequent topping up is required.

The system must be able to detect a leak corresponding to a hole greater than 1 mm (0.040") in diameter. ORVR without tank integrity diagnosis (see below) will recycle the fumes but the system will not detect a leak.