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AI-powered · Works on 1996+ vehicles

Your car is talking.
Now you'll understand it.

Plug in the DiagSage reader, scan the QR code with your phone, and get an AI diagnostic report in plain language — what's wrong, why, how to fix it, and what it should cost.

★★★★★ 5.0 from early-access users · 917 brands covered
~30sscan to report
8languages
917vehicle brands
0apps to install
Live · connected
DiagSageOBD-II
SCAN ME
PWR · LINK · OBD-II
v=5N1AT2···812345
SEVERE
Multiple Cylinder Misfire
VIN5N1AT2···812345
BrandNissan
Year2019
CodeP0300
Ignition coils 60%
Intake leak 40%
Est. repair cost$150 – $600
Our Specialties

Everything you need to read, understand and act on a fault.

Hardware that reads the car. Software that explains it. Coverage that fits almost anything on the road.

🔧

Diagnostic Hardware

A pocket-sized OBD-II reader that shows a QR code the moment it finishes scanning.

View specs →
🤖

AI Report

Plain-language explanations, ranked causes, fixes and a realistic repair-cost range — in 8 languages.

See a live report →
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Vehicle Coverage

917 brands and 6,400+ models. The VIN is decoded automatically — brand and year lock in on scan.

Check your car →
Why DiagSage

Other readers give you a code. We give you an answer.

🤖

AI explains in plain language

No more "P0171" with no context. You get what it means, the likely causes ranked by probability, and what to do next.

💰

Repair cost estimate

Know the ballpark before you walk into a shop.

🌍

8 languages, auto-detected

English, Deutsch, Français, Español, Italiano, Português, 日本語, 中文.

📱

No app to install

Customers scan a QR code and the report opens in their phone browser.

🚗

Vehicle auto-recognition

The VIN is decoded automatically — brand and year are locked in the moment they scan.

⚡

Severity you can act on

Serious faults are flagged red with a clear stop-driving warning.

The difference

You have three options when that light comes on.

Only one of them tells you what's going on before it costs you money.

  Basic code reader Dealership / shop DiagSage
What you get A code, e.g. "P0171" A diagnosis + a bill A plain-language report, free
Explains what it means ✗ ✓ but you pay for it ✓
Cost estimate before you commit ✗ ✗ you're already committed ✓
App to install Usually yes — None — scan and read
Languages Mostly English Local 8, auto-detected
Time 5–10 min + googling Half a day ~30 seconds
What people say

From people who've used it

⚠ Placeholder copy — replace with real customer reviews before launch.

★★★★★

"I'm not a mechanic. The report told me it was a loose gas cap before I spent a Saturday worrying about it."

D
Dave R.2015 Ford F-150 · Ohio, US
★★★★★

"We hand these to customers with every used car. The cost estimate stops the 'is this serious?' phone calls."

M
Marco S.Used-car dealer · Milan, IT
★★★★★

"Eight languages out of the box. My Spanish and Portuguese customers finally get a report they can actually read."

J
Jana K.Independent workshop · Prague, CZ
How it works

Three steps, about 30 seconds

No pairing, no Bluetooth menus, no account.

1

Plug it in

Into the OBD-II port under the dashboard. Present on every car sold since 1996.

2

Scan the code

The reader shows a QR code. Point your phone camera at it — no app needed.

3

Read the report

Your vehicle, the fault codes, plain-language explanations, causes, fixes and costs.

Best Seller

DiagSage AI Reader

One reader, unlimited AI reports. Works on 1996+ petrol and 2004+ diesel vehicles across North America and Europe.

  • Full OBD-II protocol support (CAN, ISO 9141-2, KWP2000, J1850)
  • Reads and clears engine and emissions (powertrain) fault codes; other systems are being added gradually
  • Unlimited AI reports in 8 languages — no subscription
  • VIN auto-decode: brand and year locked in automatically
  • No app, no account, no pairing — scan and go
ConnectorOBD-II 16-pin (standard)
ProtocolsCAN, ISO 9141-2, KWP2000, J1850 VPW/PWM
Vehicle coverage1996+ (US) · 2001+ (EU petrol) · 2004+ (EU diesel)
WirelessTBD — confirm Bluetooth or Wi-Fi
PowerFrom vehicle OBD port (no battery)
Dimensions / weightTBD
Operating temp.TBD
CertificationsCE / FCC / RoHS — pending
🔧Replace with product photo

DiagSage AI Reader

★★★★★5.0 · early access
Price on request
Launch pricing available for pre-orders and bulk orders.
  • Reader + unlimited AI reports
  • 8-language reports, auto-detected
  • Free firmware updates
  • 12-month warranty
Contact us to order Try the live demo first
✓ 12-month warranty ✓ 30-day returns ✓ Ships worldwide
Vehicle Coverage

Check whether your car is covered

917 brands, 6,400+ models — from Toyota to 五菱, Mercedes-Benz to 哈弗.

Type a brand above to check coverage.
Live Demo

See exactly what your customer sees

This is a real report from our live system — a 2019 Nissan with two fault codes. Open it on your phone; that's the actual experience.

  • Runs on our live server — not a screenshot
  • Switch to English or Chinese with the URL parameter
  • Scan the QR code with your phone to see it natively
Open live report → English version
SEVERE
Multiple Cylinder Misfire
VIN5N1AT2···812345
BrandNissan
Year2019
CodeP0300 · P0171
LIKELY CAUSES
Ignition coils — 60%
Intake air leak — 40%
WHAT TO DO
Inspect and replace faulty ignition coils; check intake hoses for cracks.
Estimated repair cost$150 – $600
FAQ

Questions, answered

Do I need to install an app?+
No. Scan the QR code shown on the reader and the report opens in your phone's browser.
Will it work on my car?+
If your car was sold in the US after 1996, or in Europe after 2001 (petrol) / 2004 (diesel), it has a standard OBD-II port and this works.
How accurate is the repair cost estimate?+
It's a range, not a quote — it reflects typical parts and labour for that fault on that vehicle class.
Which systems can it read?+
Currently focused on the engine and emissions (powertrain) system. Airbag, ABS and transmission coverage is being added gradually and depends on the manufacturer and your hardware — see the coverage list for your brand.
d, plus ABS and airbag (SRS) on most vehicles.
Does it work offline?+
The reader generates the QR code locally, so it works without internet.
Helpful Links

Everything else you might need