Automotive Online Training Shop

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Great, you’ve arrived to the Prodiags Online Training Shop
If you’re looking for traditional automotive books or just “how-to” videos you’re in the wrong place.

Our Training Modules are developed by top-tier mechanics and automotive instructors, who have realised that skills do not develop by observing others work or watching videos. Successful automotive training matches the mechanics’ practical needs, does not slip off-topic, gives examples from actual problems, and best of all, motivates you to use your brain. The same recipe is the backbone of the Prodiags Training Modules — without traveling or fixed time schedules.

The storytelling in the Training Module is groundbreaking and the studies are visually intelligent. The animations make complicated things simple to understand, the pictures give a contact point to the automotive technology and real work, videos serve as examples when needed, and texts elevate your imagination. Thanks to our customers, the modules also include a printable study material, which guides you as a “virtual teacher”. It’s practically applied tasks are based on real work experience.

Whenever you think you master the subject, you can challenge yourself with the assessments. Warning, without studying you will probably not pass them — but you can always try.

As a proof of your knowledge, to you and to others, you can print out a certificate after passing the final exam.

After completing an order you get:

  • 12 month licence to the purchased products — without monthly subscriptions.
  • access to enjoy groundbreaking Prodiags Training Modules in full
  • a certificate after passing the final exam

We offer you a 100% satisfaction guarantee on all of our products — if you are not happy we will return your money.

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Common Rail Fuel System

44.00  (~$47.20)

This online training module in common rail technology takes you through the systems function and construction. It presents to you the common rail direct injection advantages, and teaches you the basics of common rail troubleshooting and diagnostics. Learn more with this online training module, and become a diesel injection expert.

  • Timing of injection and conditions for starting the engine
  • Developments in European emission standards and diesel fuel
  • Low-pressure system components
  • High-pressure system components
  • Injection pressure adjustment
  • Troubleshooting issues with fuel flow and pressure
  • Troubleshooting component faults

Why this module?

Common Rail is now the most common fuel system in diesel vehicles. Deeper knowledge of how common rail technology works across vehicle makers and system manufacturers is a big advantage when it comes to troubleshooting.

What will you learn?

This Training Module starts by covering the basics of operation and requirements for fuel ignition in the combustion chamber. It then examines the whole fuel system from tank to injector, covering the key components and how they operate. Special focus is given to adjusting the injection pressure. The module also delivers clear explanations for high-pressure and flow control, and how they work in combination.

Learn how common rail pressure control works. What is the function of the common rail high pressure pump, and how does common rail pressure adjusting work in practice? Learn this and much more with this online training module.

The final part of the Training Module covers troubleshooting. Problems are often indicated by fault codes or symptoms, but this module will teach you how to build up a full picture by checking mechanical operation and fuel flow first. Simple tips and methods are provided to help you reach correct conclusions and carry out your work in a logical sequence.

Learn how to diagnose common rail injectors and how a common rail injector tester works. With this online training module you will improve your common rail knowledge, and develop yourself into a master diesel mechanic.

Open Product Sheet (PDF)

Learning Outcomes

As a result of taking this training module, you will increase your understanding of different common rail systems, and be better positioned to understand the symptoms of the most common problems and the faults behind them. The examples and guidelines included will help you to troubleshoot and achieve clear results from your investigations.


After completing your studies and appropriately completed assignments, you will complete the final exam. After completing the final test, you can print a Prodiags certificate from your performance record to mark your expertise.

Digitally verified certificate for completion of the Training Module


Open Product Sheet (PDF)


To reach all learning outcomes you need to have a basic knowledge of diesel engine mechanical structure and operation. Troubleshooting experience will also help you to understand how to apply the learning in practice.

Content Equivalence

This course’s topics and objectives correspond in scope to a conventional 2 day training event.

Once you have made your payment, you get immediate access to the content in the form of a license valid for 12 months. You’ll save time and money by not needing to travel.

System Requirements

Internet connection and PC or laptop with browser. Recommended screen resolution 1024 x 768 or higher.


We want to make sure that you always have the latest version of our product. Prodiags reserves the right to make real time updates and changes. This way you’ll always have the best version, without extra fees.

Open Product Sheet (PDF)

1/4 – I’m a mechanic and I want to direct the payment for the training to my foreman, how can I do this?

  • When ordering a Prodiags Training Module you can easily direct the payment to your manager or even to your mum. Open/print out the link’s instructions.

Printable order instructions (PDF) 

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2/4 – How can I provide my mechanics with useful training for example when a customer cancels an appointment?

  • With the help of an Online Training Module you can utilise open spaces in the calendar and cancelled appointments with completing efficient training.
  • If you have an ambitious mechanic whose skills and competence level you want to raise, Prodiags Training Modules are the easiest and most efficient way to start the training.

Read more about the benefits >> Workshop Manager

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3/4 – What knowledge is required from me in order to provide added value to my training event with pre-learning and online material?

  • Starting using the training material requires only a few clicks from you. You order the training material, add the participants and the pre-learning is up and running.
  • A central added value of the Training Module’s Assessments: the trainer and learner knows the starting level, which enables the interest and motivation in the training to be maintained.

Learn more >> Trainer / Teacher

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4/4 – How can I share and present Prodiags products to my community?

  • Prodiags Automotive Training Modules are meant for everyone with an interest in the automotive industry. We cooperate with different influencers and we do not bind our partners to our brand.
  • If you were interested in presenting your own collaboration idea to us, please fill in the Influencer Form and tell us more about yourself and your idea.

   Open Influencer Form >>

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