California Smog Check Program Laws & Regulations California Smog
Check Program

Law & Requirement
How to Pass the Smog Check. It's a Easy 3-Part Test! How to Pass
the Smog Check

3-Part Smog Test!
FREE Smog Check Coupons. Station Photos & Details FREE Smog
Check Coupons

50% Off Deals!
STAR Smog Check Program STAR Smog Check
What is a STAR
smog station?
VIR Reports - FREE Online Smog Check Diagnosis Tool FREE Online Smog
Test Diagnosis

ASE Repair Advice
Get $500.00 Smog Repair Assistance Program (CAP) FREE $500 Smog
Check Repairs

CA CAP Assistance
Vehicle Buy Back Program - Cash for your Car CA Recycling
Vehicle Buy Back

Cash For Your Car
DMV Vehicle Registration Register Vehicle
in California

DMV Registration
Does My Car Need a Smog Check? Does My Car Need
a Smog Check?

Exempt Vehicles
Under Your Hood - The Visual Smog Inspection Visual Smog
Inspection

Under The Hood
Automotive Coupons & Classifieds Automotive
Classifieds

Post FREE Ads
FAQ's - California Emissions Questions & Answers Smog Check Q & A
California Emissions Questions & Answers
OBDII Check Engine Light Trouble Codes Check Engine Light Trouble Codes
OBD-II Code Chart
Ask-A-Tech - Do you have a Smog Check Question? Get a Response in 24 hours. Help? Ask-A-Tech!
ASE Certified Smog Test Assistance
Smog Test Only - What is a Test Only Smog Station? Smog Test
Only Centers

What are Test Only Smog Stations?
Remote Smog Check Sensing CA Roadside
Emission Test

Remote Smog Test Sensing Device
Home Page HOME



DAD OIS Smog Test System


2000 model year and newer vehicles no longer require the tailpipe portion of the smog inspection.

Late model vehicles will be administered the new On-Board Diagnostic (OBD) Inspection System (OIS) instead of having their exhaust emission analyzed while being driven on a dynamometer. The existing visual and functional test portions of the smog inspection will still apply.

The OIS will be administered using a Data Acquisition Device (DAD). The DAD will be a stand-alone test module (connected to PC) which will determine whether a vehicle passes or fails the smog check based on the data it retrieves from the vehicle's emission control computer. The DAD will be connected to a vehicle via OBD II Data Link Connector (DLC) found on all 1996 and newer OBD II complainant vehicles.

The implementation of AB 2289 is expected to reduce the time and cost of the smog check. The program will now take better advantage of a vehicle's OBD II technology by eliminating tailpipe testing and instead using the vehicle's own OBD II emissions monitoring system.

Who can smog test 2000 & newer cars?

Non-STAR smog stations will be required to purchase OIS equipment only if they choose to inspect 2000 and newer vehicles. If you own a late model car, truck, van or SUV, and you choose to visit a non-STAR certified smog station, call in advance and verify they have OIS test equipment.

You may also choose to visit any STAR station. STAR certified smog centers are required to purchase new OIS equipment. The STAR program allows participating smog stations to inspect all vehicles, but in turn requires participants be fully equipped to inspect any vehicle which comes in.

This new smog test system is already in place in 22 other states. "This new and improved program will have the same result as taking 800,000 old cars off the road, also resulting in a more cost effective program for California motorists." said ARB Chairman, Mary D. Nichols.

Currently California's smog check procedure requires all vehicles undergo a tailpipe emissions inspection to measure harmful pollutant output from the tailpipe, a visual inspection for present and properly installed emissions components, a functional test to insure the proper operation of various emission components; and as part of the functional test, an OBD II computer diagnostic check.

Under AB 2289, the tailpipe emissions portion of the smog inspection will be eliminated for 2000 model and newer cars, trucks, vans, and SUVs.

Background on the OBD II system - All vehicles imported into the United States as of 1996 have had to be equipped with an On Board Diagnostics system referred to as OBD II. The OBD II diagnostic system is designed to monitor all aspects of your engine's emission conditions and report this information to a central database within it's computer. This information is processed and checked against the computers pre-determined values for various input levels and performance patterns.



Miles: 
Which Type Should I Choose?
 


 

If any problems are found, the computer will determine whether to alert the driver or not. If a decision has been made to alert the driver of an emissions problem, the "Check Engine" or "Engine Malfunction" light will illuminate on the vehicle's dashboard. In more serious emission conditions the computer may even begin to rapidly flash the "Check Engine/Malfunction" light indicating to the driver, that the vehicle needs immediate diagnosis/repair attention.

AB 2289 now requires the smog test inspection to rely on data from a vehicle's own on board emissions computer to determine the vehicle's harmful emissions production as opposed to using a smog machine to sample the vehicle's emissions output from the tailpipe. This design is expected to reduce the cost of equipment at the smog station, reduce the amount of time it takes to smog check a vehicle, and reduce the cost of the smog inspection to the consumer.

AB 2289 - Makes changes to the following smog inspection procedures and guidelines:

A. Authorize the use of On Board Diagnostic II testing to expedite the process.

B. Vehicles known to release large amounts of pollution must test at stations with the highest performance ratings.

C. Stricter fines structure for improper inspections.

D. Permit the state to contract with the private sector to manage franchise-like networks of independently owned Smog Check stations.

E. Encourage community colleges and other training institutions to develop technician-training programs.