We built AI-Diagnostics-Pro so that any UK driver can instantly understand their check engine light — without paying £60–£120 just to find out what the code means.
AI-Diagnostics-Pro is an AI-powered diagnostic tool that generates vehicle-specific OBD-II fault code reports for UK drivers. When you enter your fault code, vehicle make, model and year, our system uses Google's Gemini large language model — trained on extensive automotive data — to produce a report covering likely causes, UK repair costs, step-by-step fix guidance, and DVSA MOT implications.
All content on this site — including fault code guides, blog articles, and diagnostic reports — is AI-generated. We update prompts, page content, and product guidance over time as we improve the service for UK drivers.
AI-generated content is not a substitute for a qualified mechanic's hands-on assessment. Our reports are designed to help you understand your fault code, make informed decisions, and avoid being overcharged — not to replace professional diagnosis.
We identify the OBD-II diagnostic trouble code (DTC) and match it against the standardised SAE J1979 code library, covering generic P, B, C and U codes as well as manufacturer-specific codes.
The AI cross-references your fault code with your specific year, make, model and engine to produce causes and fixes relevant to your vehicle — not a generic description that applies to every car equally.
Repair cost estimates are generated using UK labour rate benchmarks sourced from AA, RAC and independent garage surveys, combined with UK parts pricing data from major UK suppliers. We specifically avoid US cost data, which is frequently cited by other tools and is not applicable to British garages.
MOT implications are assessed against the current DVSA MOT inspection manual and testing standards, updated to reflect 2026 regulations including EV and hybrid requirements.
The final report is structured to be understood by a non-technical driver — not an automotive engineer. We explain what the code means, what you can do yourself, and when you need professional help.
Every report and page on this site is reviewed by the AI-Diagnostics-Pro editorial team before publication. We check accuracy, clarity, and whether the guidance aligns with current UK garage practices and MOT standards.
Our reports are not limited to powertrain faults. When a scanner surfaces body, chassis, or communication issues, the stronger next step is to follow the matching guide rather than forcing every dashboard problem into one engine-code explanation.
Our diagnostic guidance draws on recognised UK automotive and regulatory sources:
Being transparent about limitations is as important as describing capabilities. Our AI reports are accurate for the most common causes of each fault code, but they cannot:
Page last updated: July 2026. All content reviewed by The AI-Diagnostics-Pro Team.
AI-Diagnostics-Pro is operated as a sole trader business registered in the United Kingdom. This information is provided in accordance with the UK Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013.
Have a question, found an inaccuracy, or want to suggest an improvement? We read every message and are always looking to improve the tool for UK drivers.
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