Clear, evidence-based fault-finding using professional diagnostic equipment. We find root causes — not just fault codes.
A plug-in code reader will tell you which system has logged an issue. It won't tell you what caused it, whether the part has actually failed, or whether the fault is electronic, mechanical or both. A fault code is a starting point — not an answer.
Our diagnostic service is our most requested — and the most misunderstood. It is far more than a system scan. It is a proper, methodical investigation carried out by an experienced technician using professional equipment.
A standard diagnostic session (up to one hour) typically includes:
We do not replace parts based on fault codes alone. We test to confirm. This is the difference between a proper diagnosis and an expensive guess.
Some faults require more time to investigate properly. Intermittent issues that only appear under specific conditions, complex multi-system faults, and larger or more complex vehicles — such as Range Rovers, large commercials or specialist vehicles — often need extended sessions of up to two hours.
We will tell you upfront if we believe a standard session is unlikely to be sufficient. Extended diagnostics is charged at £180 + VAT and is always agreed with you before any additional time is used.
Diagnostics is typically needed when warning lights or fault messages are present, the engine is running poorly, misfiring or in limp mode, there are electrical or intermittent faults, starting or charging problems have developed, or previous repairs elsewhere have not resolved the problem.
Sometimes the root cause is electronic. Sometimes it is mechanical. Often it is both. Our job is to find where it begins — not guess what it might be.
Certain diagnostic and programming procedures require direct access to manufacturer systems. Where this applies, there may be a small additional access charge — we will always explain this in advance and only apply it when genuinely needed. This allows us to carry out manufacturer-level work without main-dealer labour rates.
We do not work directly with warranty companies. We do not raise claims on your behalf, nor do we negotiate with warranty providers. What we do provide is a thorough, accurate diagnostic report and a clear written estimate — everything you need to submit a claim yourself.
Whether the warranty company accepts the claim, and how much they will pay, is entirely at their discretion. Any difference between our charges and what the warranty company agrees to pay remains the customer's responsibility.
We will talk through the symptoms with you first — your input matters. We then carry out the diagnostic session and contact you with findings before any further work is discussed. Nothing proceeds without your agreement. At the end of the process you will have a clear picture of what was found, what was confirmed through testing, and what your options are — explained honestly and without pressure.
Standard diagnostic session — £95 + VAT. Suitable for most warning light and fault code investigations.
Extended diagnostics — £180 + VAT. For complex or intermittent faults needing deeper investigation.
The fee is fixed for the session. If more time is needed we discuss it before continuing — no surprises.
Every diagnostic session includes a written summary of findings and recommendations.
Get in touch — we'll advise the most sensible next step before you book.