Diagnostics
Accurate vehicle diagnostics — fault code reading, live data analysis, and clear answers about what's actually going on with your car.
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A dashboard warning light tells you something is wrong. It doesn’t tell you what, or how serious. Our diagnostic service goes beyond simply reading a fault code — we use professional-grade diagnostic equipment to interrogate your vehicle’s ECU and associated systems, examine live data, and establish a clear picture of what’s actually happening.
Diagnostics are useful in a wide range of situations: a warning light that’s appeared without obvious symptoms, a performance issue you can’t identify, a car that’s running poorly, or simply pre-purchase peace of mind before buying a used vehicle. We work across all major makes and models, with coverage for manufacturer-specific codes as well as generic OBD faults.
We give you a plain-language explanation of what we’ve found, what it means for your vehicle, and what the options are — whether that’s a repair we can carry out here, something to take back to your usual garage, or simply confirmation that a fault is minor and not urgent.
Beyond basic code reading
Professional equipment and live data analysis — not just a quick OBD scan.
Plain-language results
We explain what we found in plain English, not just a code number.
All makes and models
Manufacturer-specific and generic fault coverage across a wide range of vehicles.
Pre-purchase checks
Find out what's lurking in the ECU before committing to a used car purchase.
Frequently asked
What does a diagnostic check involve?
We connect to your vehicle's OBD port, read all stored fault codes across the relevant systems, review live data where appropriate, and explain what we find.
Will diagnostics tell me exactly what's wrong?
Fault codes indicate which system has flagged an issue and what type of fault is recorded. They're a starting point, not always a definitive answer — we use them alongside live data and experience to get to the real cause.
Can you diagnose manufacturer-specific faults, not just generic OBD codes?
Yes. Our equipment covers manufacturer-specific codes for a wide range of makes — we're not limited to generic fault data.
How long does a diagnostic session take?
A standard diagnostic check typically takes 30–60 minutes. More complex or intermittent faults may take longer to properly investigate.
Mobile remapping across the South West
We come to you — Weston-super-Mare and the towns right across the region. A few of the areas we cover:
Ready to transform the way you drive?
Call 01934 245246 · info@carbontuning.co.uk