What is AutoDX Pro?

AutoDX Pro is car diagnostic software that turns three things you already have — the VIN, the fault codes from any OBD-II scanner, and the symptoms you observe — into a root-cause diagnosis with the parts needed to fix it. It was built by a working Audi/Porsche technician who got tired of watching good money burn on parts that didn't fix the problem.

It runs in the browser at www.autodxpro.com — nothing to install, works on a phone in the service bay.

How it works

• Enter the VIN. The vehicle is identified down to the engine code, and open NHTSA safety recalls for that exact car are surfaced immediately.
• Enter the fault codes. Code meanings come from a curated, verified database — manufacturer-specific definitions first, then generic SAE. A code that can't be verified is said so plainly; meanings are never guessed.
• Describe the symptoms — or photograph your scanner's screen and let the codes be read from the photo.
• Known issues come first. Factory technical service bulletins (TSBs) and pattern failures for that platform are checked before anything else, because most "mystery" faults are documented somewhere.
• Multiple independent assessments are cross-checked into a single consensus verdict, cross-referenced against factory service documentation — with the deepest coverage for Audi, Volkswagen, BMW, Mercedes-Benz and Porsche.
• You confirm with real measurements. The diagnosis tells you what to measure; you enter the readings and the verdict is refined step by step until the root cause is confirmed — only then does it recommend parts.
• Confirmed fixes feed back. Every repair that's confirmed as successful makes the next diagnosis for a similar case sharper (anonymized — no customer data leaves your shop).

Who is it for?

The DIYer fixing cars in a home garage

You have a $30 Bluetooth scanner and a check-engine light. What you don't have is the factory service information and twenty years of pattern knowledge that tells a dealership tech "on this platform, that code with that symptom is almost always the cheap sensor, not the $900 module." AutoDX Pro gives you exactly that — before you buy the first part. A single VIN is $20 — no subscription, less than one wrong part.

The independent repair shop

Diagnosis is where an independent shop wins or loses the day. AutoDX Pro shortens it, and then handles everything after it: the confirmed diagnosis becomes a priced estimate in one click, the customer approves line items by link with an e-signature from their phone, the digital vehicle inspection goes out as a branded PDF, parts come off inventory automatically when billed, a parts-ordering list gathers what every order still needs and opens the right supplier search for the exact vehicle, and the job board shows every repair order from drop-off to paid. Customer history is tied to the VIN, so the car's whole story is there the next time it rolls in.

The dealership or multi-location operation

Multiple locations under one organization with per-location billing, role-based permissions for service writers, techs and parts staff, technician assignment with hours per labor line, revenue-by-source reporting and end-of-day cash-up. Plus the specialty work that earns premium labor: pre-purchase inspections with a 12-system checklist and model-specific known issues, and hybrid/EV battery health checks with mandatory high-voltage safety procedures built into the workflow.

What makes it different

• Built by a working technician, not a software company guessing at how shops work.
• Verified fault-code database — manufacturer-specific meanings first, never guessed.
• TSB-first logic — documented factory fixes are checked before any theorizing.
• Deep German-make coverage — thousands of factory service documents and wiring diagrams for Audi, VW, BMW, Mercedes-Benz and Porsche; any OBD-II vehicle is supported.
• Measurement-driven — the diagnosis is refined with your actual readings, not just theory. Parts are recommended only after the root cause is confirmed.
• It learns from outcomes — confirmed repairs sharpen future diagnoses for everyone, anonymously.
• The whole shop in one tool — diagnostics, estimates, inspections, inventory, vendors, appointments, customers, payments and reporting, so nothing is re-typed twice.

Frequently asked questions

What do I need to use it?

A web browser, the vehicle's VIN, and fault codes from any OBD-II scanner — even a cheap Bluetooth dongle. You can also photograph the scanner's screen and the codes are read from the photo.

Which cars does it work with?

Any make with standard OBD-II diagnostics. The deepest factory-documentation coverage is for Audi, Volkswagen, BMW, Mercedes-Benz and Porsche.

Is it only for professionals?

No — home users can diagnose a single VIN for $20 with no subscription, or subscribe from $99/month. Shops and dealerships use the bigger plans with estimates, inspections, inventory and team management.

Does it replace my scan tool?

No, it works with it: the scanner reads the codes, AutoDX Pro tells you what they mean on your specific car, what to measure, and which parts fix the confirmed root cause.

How much does it cost?

A single VIN is $20 — one-time, no subscription. Diagnostic subscriptions run $99–$349/month; the All-Access plan with every shop-management feature is $499/month ($4,990/year). Every plan starts with a 7-day free trial.

Curious how this stacks up against code apps, repair-information subscriptions and shop management platforms? See how AutoDX Pro compares, or read what every part of it does.

Try AutoDX Pro free for 7 days →

AutoDX Pro provides informational diagnostic suggestions and decision-support. The technician performing the work stays responsible for every diagnosis and repair — see our Terms of Service.