Mobile Diagnostics Services for Heavy-Duty Trucks

Quick, Accurate Fault Detection to Keep You Moving

Comprehensive Mobile Diagnostics for Trucks, Trailers, and Semis

When your truck’s dashboard lights up with warning indicators, you need fast and reliable answers. Road Dog Mobile Repair offers on-site diagnostics services to identify and resolve issues quickly, ensuring your vehicle gets back to work as soon as possible.



Using advanced diagnostic tools, our experienced mechanics can pinpoint problems in diesel engines, transmissions, electrical systems, and more. Whether it’s a minor fault or a complex issue, we’ll provide a clear, accurate diagnosis and the repairs you need.

Our Diagnostics Services

Engine Diagnostics

Modern diesel engines rely on intricate systems that require expert care. Our engine diagnostics services include:


  • Reading and interpreting engine fault codes.
  • Identifying issues with fuel injectors, turbochargers, and EGR systems.
  • Testing for problems with compression, timing belts, and cooling systems.


Transmission Diagnostics

Transmission issues can cause performance problems and expensive repairs if left untreated. We provide:


  • Testing for shifting delays, slipping, or gear malfunctions.
  • Resolving issues with hydraulic systems, solenoids, and torque converters.
  • Diagnosing fluid leaks or overheating concerns.

Electrical System Diagnostics

Electrical problems can be difficult to track down without proper tools. We offer:


  • Testing for faulty sensors, modules, and relays.
  • Resolving issues with starters, alternators, and batteries.
  • Diagnosing wiring problems that cause intermittent failures.

Brake System Diagnostics

Your brake system is essential for safety, and we ensure it’s functioning properly with:


  • Diagnosing ABS (Anti-lock Braking System) errors.
  • Testing air brake systems for leaks, pressure loss, or faulty components.
  • Inspecting brake pads, rotors, and drums for wear.


Trailer Diagnostics

Trailers have unique systems that require specialized attention. We provide:


  • Testing for lighting and wiring issues.
  • Diagnosing faults in electric brakes and actuators.
  • Inspecting suspension and alignment for stability.


Advanced Computer Diagnostics

Our state-of-the-art diagnostic tools are compatible with most heavy-duty vehicle systems. We can:


  • Access and analyze data from Electronic Control Units (ECUs).
  • Identify issues with Electronic Logging Devices (ELDs).
  • Reset fault codes and run post-repair validation tests.

Common Issues We Diagnose

If you’re experiencing any of these symptoms, it’s time to schedule a diagnostic service:


  • Check engine light is on: This could indicate a wide range of issues requiring professional diagnostics.
  • Performance issues: Decreased power, fuel efficiency, or responsiveness.
  • Strange noises: Knocking, clunking, or whining sounds from the engine or transmission.
  • Overheating or coolant leaks: Often related to engine or cooling system problems.
  • Warning lights for brakes, ABS, or electrical systems: These signals should be addressed promptly to prevent further damage.
A man is working on a bus engine in a garage.

Why Choose Road Dog Mobile Repair for Diagnostics?

1. Mobile Convenience

No need to tow your vehicle to a shop—our team comes to you with the tools and expertise needed to get the job done.


2. Advanced Equipment

We use cutting-edge diagnostic tools to quickly and accurately identify issues, minimizing downtime and ensuring effective repairs.


3. Experienced Technicians

With over 10 years of experience, we’ve seen and solved a wide range of problems in heavy-duty vehicles.


4. Transparent Solutions

We provide clear explanations and recommendations, so you know exactly what’s wrong and how we’ll fix it.


5. Fully Insured for Peace of Mind

We’re insured for up to $2 million, so you can trust us with your vehicle.

Serving Tulsa and Beyond

We proudly offer mobile diagnostics services for trucks, trailers, and semis in the following areas:


  • Tulsa: Quick and accurate diagnostics for the city’s busiest trucking routes.
  • Broken Arrow: Helping local drivers and fleet managers stay on the road.
  • Sand Springs, Claremore, and Rogers County: Reliable service delivered right to your location.


Schedule Diagnostics Services with Road Dog Mobile Repair



Don’t let warning lights or performance issues slow you down. Trust Road Dog Mobile Repair for fast, professional, and accurate diagnostics services. Our experienced team will identify and resolve the problem, getting your vehicle back to peak performance in no time.