Top 11 Diesel Technician Certifications

Certifications are important for diesel technicians in the job market because they demonstrate a level of expertise and knowledge that employers look for when hiring. Certification indicates that a technician is qualified to work on specific types of diesel engines, and can be used as proof of professional competence. Certified technicians are also more likely to be seen as reliable and trustworthy by employers, which can give them an edge over those without certification when it comes to securing employment. Additionally, many employers may require certifications, or offer higher pay or better opportunities to those with certification.

This article reviews some of the top certifications for Diesel Technicians, and explains how they can help to advance a diesel technician's career.

What are Diesel Technician Certifications?

Diesel Technician Certification is a formal recognition of a technician's skill and knowledge in the field of diesel engine maintenance and repair. It is typically provided by national organizations such as the National Institute for Automotive Service Excellence (ASE), or through specific manufacturer certifications.

Achieving certification demonstrates to employers, customers, and peers that a technician has attained a certain level of proficiency in their chosen field. This can be especially beneficial for those technicians who are just starting out in their careers or have recently switched from another type of automotive service.

The certification process typically involves passing an exam which tests the applicant's knowledge on various topics related to diesel engines, including fuel systems, electrical systems, engine performance, emissions systems, drivetrain components, and more. After successful completion of the exam, technicians will receive an official certificate that can be used to demonstrate their expertise to potential employers or customers.

The benefits of Diesel Technician Certification go beyond simply impressing employers and customers; it also helps technicians stay up-to-date on industry trends and advancements in diesel technology so they can better serve their customers. Additionally, completing the certification process could potentially open up new job opportunities for technicians with specialized skillsets or those looking to move into higher-level positions within the industry.

Pro Tip: Make sure to look into any additional certifications or specializations that are available for diesel technicians. This can help you stand out in the field, as well as give you a better understanding of specific types of diesel engines and maintenance techniques.

Related: What does a Diesel Technician do?

Top 11 Diesel Technician Certifications

Here’s our list of the best certifications available to Diesel Technicians today.

1. Automotive Service Excellence (ASE) Certification

Automotive Service Excellence (ASE) Certification is a nationally recognized certification program that tests and certifies automotive professionals in the United States. It is designed to ensure that technicians have the knowledge and skills necessary to properly diagnose, service, and repair vehicles. The ASE Certification Program has been in existence since 1972 and is administered by the National Institute for Automotive Service Excellence (ASE).

The ASE Certification Program consists of a series of tests covering various areas of automotive service and repair. To become certified, individuals must pass at least one test in each of the eight major categories: engine repair, automatic transmission/transaxle, manual drive train and axles, suspension and steering, brakes, electrical/electronic systems, heating and air conditioning, and engine performance.

In order to take an ASE Certification test, individuals must first register with ASE. Registration requires proof of two years of relevant work experience or a combination of relevant work experience plus post-secondary education in the field. Once registered with ASE, individuals can then select which tests they would like to take and schedule them at an approved testing center. Tests typically take two hours to complete and cost $36 per test.

In order to be awarded an ASE Certification credential, individuals must pass all required tests within a five year period from their initial registration date with ASE. After passing all tests required for certification, individuals will receive an official certificate from ASE as well as a wallet card showing their credentials.

Individuals who wish to maintain their certification must recertify every five years by taking any applicable updated tests or by submitting proof of continuing education credits related to automotive service technology.

2. Automotive Diesel Engine Repair Certification

Automotive Diesel Engine Repair Certification is a certification that is designed to demonstrate an individual's knowledge and ability to repair and maintain diesel engines. This certification is offered by the National Institute for Automotive Service Excellence (ASE). It requires the successful completion of both a written exam and a hands-on practical test.

The written exam consists of 50 multiple-choice questions covering topics such as engine diagnosis, fuel systems, ignition systems, emission control systems, cooling systems, and other related topics. The practical test includes a series of tasks such as disassembling and reassembling diesel engine components; diagnosing electrical problems; performing preventive maintenance procedures; and troubleshooting engine performance issues.

It typically takes between 6 months to one year to prepare for the ASE Automotive Diesel Engine Repair Certification exam. Preparation can include taking courses in automotive technology or diesel engine repair at an accredited college or technical school, completing online courses or tutorials on diesel engine repair, studying textbooks on the subject matter, and attending seminars or workshops related to diesel engine repair.

To get certified by ASE you must register with them online at www.asecertification.org/register/. You will be required to pay a registration fee which varies depending on the type of certification you are seeking. After registering with ASE you will receive information about scheduling your exams including locations and dates available for testing.

The cost of getting certified by ASE varies depending on the type of certification you are seeking but generally ranges from $50-$150 for each exam taken plus any additional fees associated with registering for the exams (e.g., travel costs).

3. Automotive Brake System Certification

Automotive Brake System Certification is a certification that verifies the knowledge and skills of automotive technicians in the repair, maintenance, and diagnosis of brake systems. This certification is offered by the National Institute for Automotive Service Excellence (ASE). To get this certification, technicians must pass a series of tests that cover topics such as brake system theory, service procedures, and diagnostic techniques. The tests are divided into two parts: A written exam and a hands-on practical exam.

The written exam consists of 80 questions that must be completed within two hours. The questions cover topics such as brake system theory, service procedures, and diagnostic techniques. The practical exam consists of five tasks which must be completed within one hour. These tasks include inspecting brakes for wear, diagnosing brake problems, replacing components in a brake system, bleeding brakes, and adjusting brakes.

The cost to take the ASE Automotive Brake System Certification tests is $70 per test or $140 for both the written and practical exams. It typically takes about four weeks to receive results after taking the exams.

To get certified in Automotive Brake Systems an individual must first meet certain eligibility requirements set by ASE. These include having at least two years of work experience in automotive repair or completion of an accredited automotive program from a post-secondary institution or trade school. Once these requirements are met an individual can register online with ASE to take the exams.

4. Automotive Electrical/Electronic Systems Certification

Automotive Electrical/Electronic Systems Certification is a certification program that recognizes the knowledge and skills of individuals who are working in the automotive electrical/electronic systems industry. This certification provides recognition of an individual’s ability to diagnose, repair, and maintain automotive electrical/electronic systems.

The Automotive Electrical/Electronic Systems Certification is offered through the National Institute for Automotive Service Excellence (ASE). To become certified, applicants must pass an exam that covers topics such as automotive electrical theory, wiring diagrams, diagnostic procedures, and troubleshooting techniques. The exam also tests knowledge of specific components such as starters, alternators, batteries, ignition systems, fuel injection systems, and emission control systems.

The certification process typically takes between two and four weeks to complete. Applicants must first register with ASE and pay a fee before they can take the exam. Once registered, applicants will receive study materials from ASE to prepare for the exam. After passing the exam with a score of at least 70%, applicants will receive their Automotive Electrical/Electronic Systems Certification.

The cost of obtaining this certification varies depending on the number of exams taken and whether or not additional study materials are purchased. The initial registration fee is $60 USD plus any additional fees for exams or study materials.

5. Automotive Heating and Air Conditioning Systems Certification

Automotive Heating and Air Conditioning Systems Certification is a certification that demonstrates an individual’s knowledge and skill in servicing and repairing automotive heating and air conditioning systems. This certification is offered through the National Institute for Automotive Service Excellence (ASE). It requires passing a written test, which typically takes about two hours to complete. The cost of the exam varies depending on the location, but it usually ranges from $50-$75.

In order to become certified, individuals must have at least two years of experience working with automotive heating and air conditioning systems or have completed a formal training program in this field. They must also pass the ASE written exam with a score of 70% or higher. The exam covers topics such as basic system operation, diagnosis, repair, service procedures, component replacement, and safety practices related to automotive HVAC systems.

Once an individual has successfully passed the exam they will be awarded an ASE certification card that is valid for five years. During this time they will need to take continuing education courses in order to maintain their certification status.

6. Automotive Suspension and Steering Systems Certification

Automotive Suspension and Steering Systems Certification is a certification program offered by the National Institute for Automotive Service Excellence (ASE). This certification is designed to demonstrate a technician's knowledge and proficiency in the area of automotive suspension and steering systems.

The ASE Suspension and Steering Systems Certification test consists of 40 multiple-choice questions, which must be completed within 90 minutes. The test covers topics such as suspension system components, diagnosis, service, and repair of suspension and steering systems.

To qualify for the ASE Suspension and Steering Systems Certification exam, applicants must have at least two years of hands-on experience in the field or have successfully completed an approved training program. Applicants must also pass an ASE written exam prior to taking the certification exam.

The cost of taking the ASE Suspension and Steering Systems Certification exam is $61 USD. After passing the certification exam, technicians are required to renew their credentials every five years by retaking the exam or completing continuing education courses.

7. Automotive Manual Drive Train and Axles Certification

Automotive Manual Drive Train and Axles Certification is a certification that demonstrates a person’s knowledge of the operation, maintenance, and repair of manual drive train and axle components. This certification is offered by the National Institute for Automotive Service Excellence (ASE).

To get this certification, an individual must pass two tests: A1-Manual Drive Train and Axles and A2-Automatic Transmissions. The A1 test covers topics such as clutch systems, manual transmissions, drive shafts, universal joints, rear axles, wheel bearings, differential assemblies, transfer cases, and more. The A2 test covers topics such as automatic transmission diagnosis and repair procedures.

The cost to take the tests is $60 each. It typically takes about two hours to complete each test. To become certified in both tests requires passing scores on both tests within a five year period. Once certified, individuals must renew their certifications every five years by retaking one or both tests or by completing continuing education courses offered through ASE.

8. Automotive Automatic Transmissions/Transaxles Certification

Automotive Automatic Transmissions/Transaxles Certification is a certification program offered by the National Institute for Automotive Service Excellence (ASE). It is designed to provide automotive technicians with the knowledge and skills needed to diagnose, repair, and maintain automatic transmissions and transaxles.

To get certified, an individual must pass a two-part exam that covers both theory and practical components. The first part of the exam consists of multiple-choice questions related to automatic transmission and transaxle theory, diagnosis, repair, and maintenance. The second part of the exam includes hands-on tasks that demonstrate the technician’s ability to identify problems and perform repairs on automatic transmissions and transaxles.

The ASE certification exam typically takes about three hours to complete. To be eligible for the certification, an individual must have at least two years of experience working with automatic transmissions or transaxles or have completed an ASE-approved training program in this area.

The cost of taking the ASE certification exam varies depending on where you take it. Generally speaking, it costs between $50-$100 per test.

9. Heavy Duty Truck Equipment Technician Certificate Program

The Heavy Duty Truck Equipment Technician Certificate Program is a comprehensive program designed to prepare individuals for entry-level positions in the heavy duty truck equipment industry. The program provides students with the knowledge and skills necessary to diagnose, repair, and maintain heavy duty trucks and related equipment.

The program is typically completed in two years or less and includes courses such as diesel engine fundamentals, electrical systems, brakes and suspension systems, air conditioning systems, and preventive maintenance. Students also learn about welding, fabrication, hydraulics, computer diagnostics, and other related topics. Upon completion of the program, graduates will receive a Heavy Duty Truck Equipment Technician Certificate.

To get the certificate, students must complete all required coursework with a passing grade. Most programs require students to have a high school diploma or equivalent before they can enroll in the program. Some schools may also require applicants to pass an entrance exam prior to admission into the program.

The cost of the Heavy Duty Truck Equipment Technician Certificate Program varies depending on the school offering it. Generally speaking, tuition costs range from $2,000 to $10,000 for the entire program. Additional fees may include books and supplies as well as any applicable lab fees or registration fees.

10. National Institute for Automotive Service Excellence (NIASE) Diesel Technician Certificate

The National Institute for Automotive Service Excellence (ASE) Diesel Technician Certificate is a certification program designed to recognize professionals in the diesel repair and maintenance industry. This certificate is awarded to individuals who demonstrate their knowledge and skills in the areas of diesel engine diagnosis, repair, and service.

In order to qualify for the ASE Diesel Technician Certificate, applicants must pass a series of tests that cover topics such as engine performance, electrical systems, brakes, suspension and steering, preventive maintenance, and air conditioning. The tests are administered by an independent testing organization and are offered twice a year at various locations throughout the United States.

It typically takes about two years of on-the-job experience to be eligible for the ASE Diesel Technician Certificate. Applicants must also have completed a minimum of 30 hours of formal training related to diesel engines in order to qualify for the certification.

The cost of taking the ASE Diesel Technician Certification tests varies depending on the number of tests taken. The total cost can range from $100-$400 depending on how many tests are taken.

11. National Institute of Automotive Service Professionals (NIASP) Diesel Technician Certificate

The National Institute of Automotive Service Professionals (NIASP) Diesel Technician Certificate is a professional certification program designed to recognize the knowledge and skills of diesel technicians. This certification is available to those who have at least two years of experience working as a diesel technician in an automotive service facility. The program is designed to help technicians stay current on the latest technologies and best practices in the industry, as well as demonstrate their commitment to excellence.

To earn the NIASP Diesel Technician Certificate, technicians must complete a series of online courses, pass an exam, and submit proof of work experience. The courses cover topics such as diesel engine fundamentals, fuel systems, electrical systems, emissions control systems, and more. The cost for the program varies depending on which course package you choose; however, most packages range from $500-$800 USD.

The program typically takes between 3-6 months to complete depending on how much time you are able to dedicate to studying each week. To get started with the program you will need to register online through NIASP’s website and create an account. Once registered you will be able to access all of the materials needed for the courses and exams. After completing all of the required courses and passing the final exam you will receive your certificate from NIASP verifying your completion of the program.

Do You Really Need a Diesel Technician Certificate?

When it comes to the automotive industry, a Diesel Technician Certificate is an important qualification. This certificate demonstrates that a technician has the knowledge and skills necessary to perform maintenance and repair services on diesel vehicles. It is also a sign of professionalism and ensures that customers are getting quality service from an experienced technician.

Having a Diesel Technician Certificate can help you stand out in the job market. It shows employers that you have taken the time and effort to learn about diesel engine technology and have been certified in it by an accredited organization. This can be especially beneficial if you are looking for work with companies who specialize in diesel engines or heavy-duty trucks. In addition, having this certificate may give you access to higher salaries since employers know that you have the expertise they need when it comes to working on their machines.

Not all technicians will need a Diesel Technician Certificate, however. If your primary focus is on gasoline engines or other types of motor vehicles, then this certification may not be necessary for your career goals. However, if you want to expand your skill set and open up more opportunities in the automotive industry, then obtaining a certificate could be beneficial for your long-term success.

Related: Diesel Technician Resume Examples

FAQs About Diesel Technician Certifications

1. What qualifications are required to become a diesel technician?

Answer: To become a diesel technician, you need to have a high school diploma or equivalent and complete an accredited diesel technology program. You may also need to obtain certifications related to your chosen field of work.

2. How long does it take to become certified as a diesel technician?

Answer: The length of time it takes to become certified as a diesel technician varies depending on the type of certification and the experience of the individual seeking certification. Generally, it can take anywhere from six months up to two years to become certified.

3. What types of certifications are available for diesel technicians?

Answer: There are several types of certifications available for diesel technicians, including ASE (Automotive Service Excellence) certification, OTC (On-Board Diagnostics) certification, and EPA (Environmental Protection Agency) certification. Each type of certification requires different levels of training and experience in order for an individual to qualify for them.

4. Are there any prerequisites for becoming certified as a diesel technician?

Answer: Yes, depending on the type of certification sought after, some prerequisites may be required in order for an individual to qualify for certain certifications. For example, ASE requires that applicants possess a valid driver's license and have at least two years of experience working with automobiles or heavy equipment before they can qualify for their certification exams.

5. How much do diesel technicians make annually?

Answer: The annual salary range for diesel technicians can vary widely depending on experience level, location, industry, and other factors; however, according to PayScale, the average salary range is between $35K-$62K per year in the United States