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Division of Air Pollution Control Technical Resource Center



Technician Resource Center

In this section, you will find links to internal and external sites offering helpful information on making repairs to vehicles employing the latest emissions control technologies.  Check here often for updates.
 

  

Internal Sites:

OBD II Repair Information: from the Fall 2003 issue of TechTalk (PDF).

 NOx Repair Information: from the Summer 2003 issue of TechTalk (PDF).

External Sites:

Auto Fix World

  Specific repair studies, tool reviews, and theory
  NOx emissions and repair techniques tutorial from Auto Fix World.

 
OBD Clearinghouse

To facilitate better understanding of On-Board Diagnostics (OBD) technology, the Center for Automotive Science & Technology at Weber State University has established the National OBD Clearing House through an US Environmental Protection Agency (US EPA) grant.

 

Look Up Diagnostic Trouble Codes

OBD-Codes.com lets you search for generic OBD-II trouble codes or by manufacturer specific trouble codes. 

 

Emissions Fixes for 21 Problem Vehicles

The Denver, Colorado testing program provides this guide to repairing emissions problems on 21 different makes and models of vehicles. (Note: these fixes were developed for high altitude so be careful with the advice on re-jetting at Ohio altitudes.)

 

NCVECS OBD II Drive Trace Information

The National Center for Vehicle Emissions Control and Safety at Colorado State University publishes a software program on CD with all OBD II drive trace information known at this time.

 

Technical Support Hotlines

A list of for-pay help lines offering assistance on problem repairs.

 

Where to find Automotive Repair Databases

A list of libraries in Ohio offering access to ALLDATA and Mitchells OnDemand automotive repair databases.

 

 

Automobile Repair Databases

The following libraries have free, on-line access to ALLDATA automobile repair databases.

Library

Web Address

ALLDATA

Cleveland Public Library

www.cpl.org

X

Cuyahoga County Public Library

www.cuyahogalibrary.org

X

Geauga County Public Library

www.geauga.lib.oh.us

X

Medina County Public Library

www.mcdl.info

X

Portage County District Library

www.portagecounty.lib.oh .us

X

 

NOTE: All of these libraries require a valid library card to access the repair databases. Access is only available at a library branch.

External Links Disclaimer

* Although Ohio EPA cannot endorse, sanction or guarantee the accuracy of information found on external Web sites, we think you might find these outside links useful. When you select a link to an external Web site, you are leaving Ohio EPA's Web site and are subject to the privacy, security and accessibility policies of the owners/sponsors of the external site.

Adobe Reader Note

* Adobe Acrobat Reader is required to view the [PDF] publications.  If you do not have Adobe Acrobat Reader, click here to download it for free.
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Contact the Division of Air Pollution Control - Mobile Sources Section
Mailing Address: P.O. Box 1049, Columbus, OH 43216-1049
Street Address: 50 West Town Street, Suite 700 Columbus, OH 43215
Phone: 1-800-CAR-TEST or (614) 644-3059
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Emergency Response Hotline (800) 282-9378
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