Legal Requirements

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.

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

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

On cars intended for markets with legal requirements concerning tank integrity diagnosis, the software in T7 will turn on the CHECK ENGINE lamp. On markets without this legal requirement, the CHECK ENGINE lamp will not be turned on but a diagnostic trouble code will still 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 litres (4-10 gallons) of fuel per minute. The tank must be able to be filled at 15-38 litres (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 of 1 mm (0,040") in diameter. ORVR without tank integrity diagnosis (see below) will not detect a leak although the vapor recovery will still work.