Diagnostic Service

Shop Rate: $115.00/hour
Service Truck: $120.00/hour
*($1.50 per KM & 3 hour minimum charge applies)

The Best Diagnostic Service
in Red Deer, AB

When a dreaded warning light, such as the check engine light, appears on the dashboard, we address the issue with resourcefulness and resolve. Using advanced diagnostic technology and heavy-duty expertise, we'll quickly pinpoint the problem, fix it in a timely manner, and get you back on the road with confidence.

What activated the warning light on my truck?

There's not a straightforward answer without running diagnostics since heavy trucks built in the past few decades have become increasingly computerized and are loaded with sensors. It's not uncommon to have up to 100 sensors in modern motor vehicles. Sensors contribute to optimizing engine performance, decreasing emissions for a cleaner environment, enhancing comfort and convenience, improving safety, and more. Some examples include temperature and pressure sensors; diesel exhaust fluid (DEF) dosing sensors; nitrogen oxides (NOx) and exhaust gas recirculation (EGR) monitoring sensors; heating, ventilation, and air conditioning (HVAC) quality sensors; and controller-area-network (CAN) bus performance sensors. Bottom line, if a warning light is on, you need to have an electronic diagnostic assessment to detect fault codes and determine the problem.

After a warning light comes on, how soon should I have the problem diagnosed?

Without knowing the exact problem that triggered the light, it's important to run a diagnostic test as soon as possible to avoid potentially increasing damage--perhaps permanent damage--to your truck. Keep in mind, delaying a diagnostic check may lead to more repairs needed, which means higher repair expenses and more time that you're not working.

Who does the best heavy-truck diagnostics in the Alberta area?

Located in Red Deer, AB, OTR Diesel is an excellent choice. Our friendly, professional experts use modern, high-tech equipment and extensive experience to quickly identify the issue(s), make necessary repairs, and get you back on the road and making money promptly. You may schedule an appointment online by clicking here, or call us at 587-447-8440.

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Have a Question? Call the Shop.

There's nothing worse than not having an answer to a nagging problem. We're happy to help walk you through any issues your vehicle is having — whether it results in you working with us or not.

Give us a call and our techs will be happy to help find the right solution.

  • Knowledgeable
  • Friendly
  • 22+ years of experience
Peterbilt truck front grille
Jenn P.
5 Star Review
a month ago

My radiator blew a hole on a Saturday evening; Paddy let me have it towed that night to his shop and went in on a Sunday for a full diagnosis. He was professional, efficient and did a fantastic job taking care of the repairs I ended up needing, in a timely manner. I recommend Paddy and OTR for everyone's automotive needs.

J. M.
5 Star Review
a month ago

Went in for an oil change, found out that the oil pan was cracked and also there was damage to other parts of the car and so it turned out to be a very expensive repair. Took some extra time but was able to get all the needed parts in and car is now working great. Friendly service and quality job.

Blaine B.
5 Star Review
2 months ago

Super Happy I found a great HD mechanic in Red Deer!! Paddy @ OTR was first class in his attention to detail and finding a quick solution to get us back on the Road. We are out of Edmonton and go back and forth to calgary a lot, So having a great mechanic in the middle is perfect for those “just in case” scenarios.

Bradley B.
5 Star Review
a month ago

Fast friendly service! Extended hours! Fair rates!

Ross M.
5 Star Review
3 months ago

Very good mechanics shop.

Rylan F.
5 Star Review
2 months ago

Great service provided, fixed my unit in a quick professional manner. 10/10