How Diagnostics Work
Diagnostics isn't plugging in a scanner and reading a code. It's a structured process — and doing it properly is the difference between fixing the fault first time and replacing parts until the warning light goes out.
1. Full system scan
We connect the correct dealer-level tool for your vehicle and read every control unit — not just the engine. Engine, gearbox, ABS, airbag, body, comfort, networking and more. A generic scanner reads a handful; we read them all.
2. Fault code analysis
Every stored code is read in context. A code points at a circuit or system — it rarely names the exact part that's failed. We log which codes are current, which are historic, and which are stored across more than one module.
3. Live data inspection
We compare live data — sensor readings, actuator commands, voltages and signals — against expected values. This shows what a component is actually doing, rather than just that it has flagged a code.
4. Component-level testing
Before any part is condemned we test it properly — load testing, oscilloscope traces, wiring checks, earth and continuity tests. We don't swap parts on a hunch.
5. Clear, jargon-free report
You get a plain-English explanation of what we've found, what's needed to fix it, and a recommendation. Any further work is quoted separately — you know the cost before we proceed.
What It Costs
A full vehicle diagnostic is £100 + VAT. That covers the full module scan, live data inspection where required, and a clear written report of the findings. Any further repair or programming work is quoted separately — you'll know the cost before we proceed.
Ready to book in.
Tell us about your vehicle and the symptoms you're seeing. We'll come back to you with the next steps.