Repair Industry Information

OHIO-1 Technician's Advantage Course

Certified Technician Classes

What classes are required to become an Ohio EPA-certified technician?

Important Notice: OHIO-1 Technician’s Advantage has replaced the EDGE requirement as well as the two-hour NOx and OBD II seminars. The NOx and OBD II seminars, as well as EDGE classes, have been phased out. 

An E-Check licensed repair shop must have a “current” E-Check certified technician to be “licensed." Technicians who do not have EDGE and want to be certified and current must take the new OHIO-1 Technician’s Advantage course or show current ASE L-1 certification.

Where are the different classes offered, and how much do the classes cost?

Please contact one of the following trainers to obtain the location, cost, date and time of OHIO-1 classes:

Trainer Phone Email
Sam Bell

Lusty Wrench
2120 Lee Road
Cleveland Heights, OH 44118
(216) 371-8150
John Forro

A.S.T. Training
1669 W. 130th St.
Hinckley, OH 44233
(330) 220-8107
Tom Rayk 

NAPA Autotech
2999 Circle 75 Parkway
Atlanta, GA 30339
(330) 242-2288

How long are the classes?


Class Time

OHIO-1 Advantage

40 hours


Eight hours


Mode 6 and Monitors Course

New "Mode 6 and Monitors" 2-Day Training Offered

A new advanced training course called Mode 6 and Monitors has been developed for upper-level auto repair technicians. This intensive eight-hour seminar is designed to help technicians reduce diagnostic time, extinguish the Malfunction Indicator Light (and keep it off), and reset vehicle monitors in preparation for the Ohio scan tool emissions test. The course assumes a working familiarity with OBD II emissions operation, and concentrates on advanced scan tool test modes, including Mode 6. Technicians will analyze vehicle computer data screens from several scan tool interfaces that can assist them in diagnosis, repair and repair verification. Students also will learn how to interpret and use factory test standards.

Some of the course's many topics include: when not to erase DTCs; how to set readings using a generic or OEM drive cycle; how a monitor can be disabled; how to diagnose and correct EVAP system problems; Natural Vacuum Leak Detection; accessing and interpreting Mode 6 data; the limitations of Mode 6; CAN vehicles; using the Internet to gather free repair data and information; how to avoid driving the car for hours to reset monitors; and when to let the PCM turn off the MIL to avoid resetting monitors to incomplete.

In addition, the course includes vehicle-specific case studies, exercises and quizzes to help students evaluate their progress. To ensure that this class is truly relevant, useful and of the highest possible quality, Ohio Master Trainer Tom Rayk and Sam Bell, shop owner, Ohio Certified Trainer and Motor magazine contributor, have personally reviewed and contributed to developing these materials.

The classes will be held in two four-hour sessions. Students will receive a heavily illustrated 100+ page course book that includes course materials and a reference section. Classes will be taught by approved trainers who successfully complete a strenuous training program and pass a demanding final examination.

How to Become a Licensed Repair Facility

Becoming a Licensed ECheck Repair Facility


Download this flowchart [PDF]


How to Become a Certified Repair Technician

Becoming an Echeck markCheck Certified Repair Technician


Download this flowchart ( [PDF])

Licensed Repair Facilities List

Anti-tampering Information

Ohio's Anti-Tampering Law

Ohio's Anti-Tampering Law Fact Sheet [PDF]

Ohio's Anti-Tampering Law: What Auto Dealers Should Know Fact Sheet [PDF]

U.S. EPA's Memorandum 1A [PDF]

For Repair Shops: FAQ Regarding Repairs of Exhaust and Emissions Systems [PDF]

General Anti-Tampering FAQ


A law that protects consumers from being sold tampered vehicles became effective Sept. 27, 1993. It was amended on June 28, 1993, by Senate Bill 18. The law also enhanced Ohio EPA's authority to enforce existing tampering related prohibitions, such as selling or installing a device on a vehicle that would damage or bypass any emission control system. The prohibitions in the law apply to vehicles sold "as is" as well as those sold with warranties.

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What is tampering?

According to Ohio Revised Code Section 3704.16, tampering means "to remove permanently, bypass, defeat, or render inoperative, in whole or in part, any emission control system that is installed on or in a motor vehicle." Tampering includes acts such as: removing the catalytic converter from a vehicle and installing a straight pipe; removing the substrate from inside the catalytic converter ("cleaning" it out); removing an air pump or disabling the air pump by removing the air pump belt; or installing a nonstandard thermostatic air cleaner.

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Just what is illegal in Ohio?

Under state law, it is illegal to sell, lease, rent or operate a vehicle in a tampered condition. Removing a pollution control device from a vehicle is illegal. Likewise, selling or installing a device that would hamper the effectiveness of any vehicle pollution control system is prohibited. Individuals, as well as car dealerships, muffler shops and repair facilities, are prohibited from tampering with a motor vehicle. If you know of someone who has tampered with a vehicle, you may file a complaint with Ohio EPA.

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What remedies are available to me if I purchase a tampered vehicle?

If you purchased a tampered vehicle on or after Sept. 27, 1993, you may take independent legal action to rescind the sale and recover damages from the seller. In addition, you may file a complaint with the Mobile Sources Section of the Ohio EPA. If the vehicle was purchased from a dealer and an Ohio EPA investigation determines that further violations of the anti-tampering law have occurred, Ohio EPA can take an enforcement action against the dealer.

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What should I look for when buying a used vehicle?

Before buying the vehicle, ask the seller if the vehicle meets all federal and state emission system tampering laws. You should then look under the hood of the car for the Vehicle Emissions Control Information (VECI) label. This label identifies most of the emission control systems that were installed on the vehicle when it was manufactured. Next to the VECI label should be a routing diagram that shows where on the engine the emission control devices are located. If the seller is familiar with the workings of a vehicle engine, have him or her show you all of the devices, including the catalytic converter. If the seller is not familiar with the vehicle's engine, ask if the vehicle can be driven to a repair facility so it can be looked over. It is a good practice to take a used vehicle you are considering buying to a repair technician you trust.

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I purchased a vehicle and soon after that, the catalytic converter quit working. Was it illegal for the seller to allow me to purchase the vehicle?

Probably not. If the converter was present and properly connected when the vehicle was sold to you, it was not tampered but, most likely defective or malmaintained. Malmaintenance can result in corroded exhaust systems and converters, deteriorated hot air tubes, as well as clogged air filters. Although malmaintenance does affect your vehicle's emission system, it is not considered tampering. Tampering involves such acts as: willfully removing the converter, air pump, computer controls, etc.; plugging the vacuum line to the exhaust gas recirculation valve; or installing a dual exhaust system on a vehicle originally designed for single exhaust that had no option for dual exhaust. If the converter is defective, you may be entitled to free warranty repairs. You may find information in the vehicle's manual in the Vehicle Warranty Booklet or contact Ohio EPA's Mobile Sources Section for additional information about the defective emission parts warranty.

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Can I trade in my tampered vehicle for a new car?

When you trade in a vehicle, you are actually selling the vehicle to a dealer. Trading in a tampered vehicle, therefore, violates the anti-tampering law. Under this scenario, a judgment could be made requiring the rescission of the sale and possibly requiring you to pay damages to the dealer. If the vehicle dealer sells that vehicle to someone else in the same tampered condition, the dealer, not you, would be held liable for the sale to the consumer. This does not keep the dealer from seeking legal action against you.

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I purchased a used vehicle that was tampered. Before I knew it was tampered, I spent a good deal of money having repairs performed. Can I recover any of the money spent on this vehicle?

The person that you purchased the vehicle from should be allowed the opportunity to repair the vehicle to "as manufactured" condition or allow you to return the vehicle for a full refund. Damage amounts are awarded by a judge if the buyer decides to file a motion in court. If a judge decides that a seller knowingly sold the vehicle in a tampered condition, the seller would probably be required to repair the vehicle so that it conforms to the U.S. EPA-certified vehicle configuration of that model year or newer.

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What problems might I encounter by driving a tampered vehicle?

Some motorists will remove or disconnect a damaged or non-working emissions device believing that removing or disconnecting the device will increase gas mileage, or have no effect on a vehicle. But tampering will affect vehicle performance in a negative way. Today's vehicles are sophisticated machines with well-integrated systems. Disabling or removing any emission control system can result in decreased performance, poor fuel economy, greater damage to other associated systems, and in extreme cases result in an inoperable vehicle. In addition, knowingly operating a tampered vehicle is a minor misdemeanor under state law.

Furthermore, if you live in a county that has or will have an automobile emissions testing program, you may have difficulty registering a tampered vehicle. Depending on the degree of tampering, a vehicle can fail the inspection and the owner can incur potentially high repair costs in order to pass inspection. Vehicles are required to pass inspection before they are registered.

Perhaps, the best reason not to tamper with your vehicle's emission control systems is that doing so adds pollution to the air. Well-maintained vehicles that are kept in their original configuration emit a small amount of pollutants. Tampered vehicles can emit well over 100 times that amount. When our vehicles are polluting as little as possible, we can all breathe a little easier.

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As an auto dealer, what remedies are available to me if I purchase a tampered vehicle from a wholesaler or an auctioneer?

If you purchased a tampered vehicle from a wholesaler in Ohio, you may take independent legal action to rescind the sale and/or recover damages from the seller. In addition, you may file a complaint with the Ohio EPA Mobile Sources Section. If an Ohio EPA investigation determines that further anti-tampering violations have occurred, Ohio EPA can take enforcement action against the wholesaler.

If you purchased a vehicle from an auction, you cannot seek a recision or damages from the auctioneer because the auctioneer does not take title to the vehicle. A recision or damages may be sought from the previous owner if the vehicle was titled in Ohio at the time of the purchase.

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As an auto dealer, is there a special procedure I should follow if I want to sell a tampered vehicle to a salvage dealer for parts?

Not if the dealer is a licensed salvage dealer. The Bureau of Motor Vehicles only allows individuals with salvage dealer licenses to apply for and receive salvage certificates of title. Vehicles with salvage certificates of title are exempt from the provisions on the anti-tampering law. Be sure that the dealer to whom you sell the tampered vehicle has a salvage dealer license and that he or she intends to obtain a salvage certificate of title for the vehicle (It is a good idea to get this in writing.). Following the above procedure will make it clear that you intend to comply with the anti-tampering law.

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As an auto dealer, is it illegal to sell high performance vehicles or race vehicles?

Vehicles that are used solely for racing (meaning they are only driven on a race track and towed or transported on a trailer to race tracks) may be sold in a modified condition if and only if the new owner intends to use the vehicle for racing. It is a good idea to have the buyer sign a statement agreeing that he or she intends to drive the vehicle only on race courses. Staff from the Mobile Sources Section's anti-tampering program can assist you in drafting language for an appropriate statement.

Vehicles which have been modified and are in a tampered condition cannot be sold if they are driven on the roadways, even if only for a short distance. This type of vehicle should be returned to manufacturer's specifications before selling or operating it.

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As an auto dealer, should I take a tampered vehicle as a customer trade-in for a new vehicle?

No. The trade-in transaction is considered a sale and this act would violate the anti-tampering law. If a customer offers you a tampered vehicle in trade, you should tell the customer that the tampered emissions systems must be repaired prior to accepting the vehicle. You may offer to repair the vehicle, if you have the ability to do the necessary repairs, and work out the repair costs as part of the trade-in agreement.

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As an auto dealer, how can I protect myself from a customer falsely accusing me of selling him or her a tampered vehicle?

In Ohio Revised Code Section 3704.162 (C) (1), the law allows reasonable reimbursement of attorney's fees if the court finds the complainant has brought or maintained a groundless action. Reimbursement of attorney fees also may be awarded if the action was filed in bad faith or if the complainant has tampered with the vehicle after the sale. To protect yourself from the ramifications of selling, or being accused of selling a tampered vehicle, you may want to develop a checklist of emission control systems that you and the consumer can review prior to vehicle purchase.

There are at least three companies in the U.S. that produce manuals containing emission control tables for most makes and models of foreign and domestic vehicles. These manuals are good resources for repair technicians and vehicle dealers concerned about the federal and state anti-tampering laws. You may contact Ohio EPA's Mobile Sources Section for further information about these manuals.

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As an auto dealer, I sold a customer a used vehicle and a few days later the air pump belt fell off. Am I guilty of selling a tampered vehicle?

A deteriorated air pump belt is considered a malmaintained item and not a tampered item because the belt was present at the time of sale, even though it probably was in poor condition. The new owner is responsible for replacement cost of this item, if it is not under warranty.

Another situation that might be considered malmaintenance is a converter that has lost its effectiveness. If the converter is still on the vehicle and it has not been hollowed out or cleaned out, it would not be considered tampered. If the converter interior has been removed, the vehicle is tampered. If a converter has been jarred by a rock rendering the inside components inoperative, this would be considered malmaintenance.

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Additional questions? Call (614) 644-3059

TRIAG Information

Training Repair Industry Advisory Group (TRIAG)

TRIAG's Mission

The Training Repair Industry Advisory Group's (TRIAG) mission is to ensure that repair facilities within the testing area are equipped and prepared to assist motorists with timely, appropriate, and cost-effective emissions control system repairs. To that end, the group's Ohio EPA-certified repair technicians and trainers work with representatives from Envirotest Systems Corp. and Ohio EPA to develop appropriate training courses for local shops. They also serve in an advisory capacity to assist with program enhancements and updates.

TRIAG Meetings

There are no meetings scheduled at this time.

03/11/2009 Meeting Minutes [PDF]

12/11/2008 Meeting Minutes [PDF]

09/11/2008 Meeting MInutes [PDF]

06/10/2008 Meeting Minutes [PDF]

Other Links

U.S. EPA's Office of Transportation and Air Quality (OTAQ)