2010 Volvo S40 Owner's Manual - Page 215

09 Maintenance and servicing Maintaining your car How Do States Use OBD II for Emission Inspections? Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test. your vehicle diagnosed and, if necessary, serviced by a qualified Volvo technician. 09 • If you recently had service for a lit Check Engine light, or if you had service that required disconnecting the battery, a period of driving is necessary to bring the OBD II system to "ready" for inspection. A half-hour trip of mixed stop-and-go/highway driving is typically needed to allow OBD II to reach readiness. Your Volvo retailer can provide you with more information on planning a trip. How Can My Vehicle Fail OBD II Emission Inspection? Your vehicle can fail OBD II emission inspection for any of the following reasons. • If your Check Engine (MIL) light is lit, your vehicle may fail inspection. • Maintain your vehicle in accordance with your vehicle's maintenance schedule. • If your vehicle's Check Engine light was lit, but went out without any action on your part, OBD II will still have a recorded fault. Your vehicle may pass or fail, depending on the inspection practices in your area. • If you had recent service that required disconnecting the battery, OBD II diagnostic information may be incomplete and "not ready" for inspection. A vehicle that is not ready may fail inspection. How Can I Prepare for My Next OBD II Emission Inspection? • If your Check Engine (MIL) light is lit - or was lit but went out without service, have 215