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Mackay Car Diagnostics

At Mick Dunn Motor Repairs, we offer precise and efficient car diagnostics in Mackay to identify issues before they become major problems. Using advanced diagnostic tools, our technicians will quickly pinpoint faults in your engine, brakes, electrical system, or onboard computer, helping you avoid unnecessary repairs or guesswork.


Our process includes a full scan of your vehicle’s systems, allowing us to detect performance issues, sensor faults, warning lights, and more. We work on all makes and models, including cars, utes, and commercial vehicles. Once we’ve identified the cause, we’ll explain it clearly and carry out any needed repairs with your approval.


We focus on fast turnaround times, accurate reporting, and honest advice so you can drive away with confidence. To book your next diagnostic check in Mackay, call us at 07 4957 4213.

Pinpointing Faults for Effective Solutions

Our Mechanical Diagnostic Process

Our car diagnostics are designed to quickly identify faults and provide clear solutions, saving you time and money. Here’s how our diagnostic check process works from start to finish:


  • Discussing Your Vehicle Concerns: We begin by asking about any warning lights, performance issues, or unusual behaviour you’ve noticed.
  • Connecting the Diagnostic Scanner: We use advanced scan tools to read fault codes from your vehicle’s onboard computer.
  • Analysing the Fault Codes: Our technicians review the codes and cross-check them against manufacturer specifications for accuracy.
  • Performing Visual and Manual Checks: We carry out further inspections to confirm the source of the problem and rule out related issues.
  • Explaining the Results and Next Steps: We clearly explain the findings and recommend any required repairs, giving you full control before work begins.


Book a scan today to arrange accurate, stress-free car diagnostics in Mackay.

Frequently Asked Questions

  • IS A DIAGNOSTIC TEST NECESSARY IF THERE’S NO WARNING LIGHT?

    Yes, a diagnostic test can still be useful even without a warning light. It can detect minor faults or intermittent issues before they become serious. It’s also helpful for confirming everything is running correctly during routine servicing or before long trips.

  • WHAT EQUIPMENT IS USED FOR DIAGNOSTIC TESTING?

    Technicians use scan tools or diagnostic scanners that connect to the vehicle’s OBD (On-Board Diagnostics) port. These tools read and interpret fault codes, access system data, and sometimes perform active tests to check sensor or component function in real time.

  • CAN ANY VEHICLE BE DIAGNOSED?

    Most vehicles manufactured after 2000 have a standard OBD-II port, making them compatible with diagnostic tools. Modern tools can diagnose petrol, diesel, hybrid, and some electric vehicles across a wide range of makes and models.