YOUCANIC UCAN-HD-A Heavy-Duty Diesel Truck Scanner – Full-System

The All-in-One Scanner for Trucks, Buses & Equipment

The UCAN-HD-A is a premium-grade diesel diagnostic scanner built for real-world technicians, fleet managers, and owner-operators. Designed to match or exceed dealer-level functionality, it delivers the critical functions professionals need daily — without subscription fees.

💥 What Mechanics & Fleet Operators Love About It:

✅ Fast Boot-Up + Glove-Friendly Touchscreen

• Daylight-readable touchscreen responds even with gloves

• Boots in seconds with Android OS for smooth multitasking

✅ Covers What Really Matters

• Works with Freightliner, Cummins, Volvo, CAT, PACCAR, Isuzu, Hino, and more

• Covers Class 4–8 trucks, buses, and off-highway equipment

• Supports J1939, J1708, J1587, CAN, KWP2000, ISO9141-2, SAE J1850

🔍 Deep Diagnostic Power — Beyond Just Reading Codes

✔️ Full-System Diagnostics:

• Scan Engine, Transmission, ABS, SRS, BCM, TCM, TPMS, HVAC, and more

• View Freeze Frame, Live Data, ECU Info, and permanent DTCs

✔️ Live Sensor Graphing & PID Merge:

• Graph multiple sensors in real-time

• Merge data streams for quick comparative diagnosis

✔️ Bi-Directional Controls (Active Tests):

• Command DPF regen, DEF pump, turbo actuators, EGR valve, fans, throttle body, etc.

✔️ VIN Auto-ID & Fast ECU Access:

• Instantly identifies vehicle by VIN

• Retrieves the full ECU tree structure and modules in seconds

 Smart Special Functions Mechanics Actually Use

🟩 DPF Regeneration (Stationary + Driving)

• Force soot burn-off

• Monitor soot level, exhaust temp, regen history

🟩 Injector Cutoff & Coding

• Disable specific injectors for diagnosis

• Code replacements for proper calibration

🟩 Cylinder Balance Test

• Detect misfiring, weak, or low-contribution cylinders

🟩 Speed Limit Settings (Road + Engine Governor)

• View/set speed governor

• Adjust idle RPMs

🟩 ABS Bleeding

• Perform ABS module bleeding after service

🟩 SCR/DEF Diagnostics

• Reset fluid levels

• Monitor NOx sensors

• Test DEF doser pump

🟩 Throttle/EGR/Boost Tests

• Command EGR valve open/close

• Activate turbo boost solenoids

🟩 Sensor Calibrations & Reset Functions

• Oil/service reset

• TPMS, steering angle, battery, DPF counter resets

🛠 Workshop-Ready Features

• One-Touch WiFi Update — Always up to date with free lifetime software

• Print & Email Diagnostic Reports — Directly from the scanner

• Cloud Storage & USB Export — Save job history, export logs

• Supports Remote Support — Get help when needed

📦 What’s Included

• UCAN-HD-A Diagnostic Tablet

• VCI Bluetooth Adapter

• Full Heavy-Duty Adapter Kit (6/9 pin, OBD2, etc.)

• USB charging cable & wall charger

• User manual

• Rugged carrying case

📐 Technical Specs

• Display: 7" TFT LCD (Daylight-readable, glove-friendly)

• OS: Android 9.0

• Processor: 1.3GHz Quad-core

• Memory: 2GB RAM + 64GB Storage

• Battery: 5000mAh lithium-polymer

• Operating Temp: -10°C to 70°C

• Connectivity: WiFi, Bluetooth, USB

• Protocols: J1939, J1708, CAN, ISO9141, and more

🔧 Professional Support

• 12-Month Manufacturer Warranty

• Free Lifetime Software Updates

• Email-Based Tech Support (U.S.-Based)

• Remote Assistance via TeamViewer

Supported Models

Top 40 Most Used UCAN-HD-A Scanner Functions

Core Diagnostic Functions

1. Full system diagnostic scan for trucks and buses

2. Read fault codes from all control modules

3. Clear fault codes after repairs

4. Live data stream viewing

5. ECU information and module identification

6. Freeze frame data

7. Automatic quick scan of all systems

8. Manual control module selection

9. Diagnostic report generation (PDF)

10. Vehicle history and scan records

Advanced & Bidirectional Functions

11. Active tests (bi directional control)

12. Injector cutoff test (cylinder contribution test)

13. Actuator tests for engine components

14. Command component ON/OFF for diagnostics

15. Fuel system testing via active commands

16. ABS actuator testing

17. Engine system functional tests

Diesel Specific & Emissions

18. DPF regeneration (manual forced regen)

19. Ash service regeneration

20. DPF differential pressure monitoring

21. Diesel emissions diagnostics

22. NOx related diagnostics (where supported)

23. Diesel engine live sensor monitoring

24. Exhaust temperature monitoring

Engine & Powertrain

25. Engine speed limit setting

26. Vehicle road speed limiter adjustment

27. Transmission live data monitoring

28. Engine parameter configuration (supported models)

29. Turbo boost pressure monitoring

30. Fuel rail pressure live data

ABS & Safety Systems

31. ABS system diagnostics

32. ABS live data and wheel speed monitoring

33. Brake system fault diagnosis

34. ABS fault code clearing

Utility & Professional Tools

35. CAN bus pin detection and voltage testing

36. OBD protocol pin testing

37. Data playback and graph comparison

38. Multi-graph and merged graph live data

39. Remote diagnostic support via TeamViewer

40. Shop manager with vehicle and customer records

Quick Notes

• Coverage varies slightly by truck brand, model, and ECU software, which is normal for all professional scan tools

• UCAN-HD-A supports J1939, J1708, CAN FD, DOIP, making it future ready

• This is a true heavy duty scanner, not a light duty tool with limited HD add-ons

🏁 Built to Make You Faster, Smarter & More Profitable

Whether you're chasing down an intermittent injector issue or resetting a DPF after a turbo install, the YOUCANIC UCAN-HD-A has your back — without subscriptions or annual renewals. Whether you're clearing a check engine light, performing a forced DPF regen, or troubleshooting injector misfires, the YOUCANIC UCAN-HD-A is built for the most common heavy-duty diagnostic needs. Mechanics often rely on this scanner for functions like reading and clearing fault codes, ABS brake bleeding, DEF/SCR system diagnosis, live data streaming, and injector cut-off tests. Fleet managers use it for speed limiter adjustments, idle RPM calibration, and resetting maintenance/service lights. It also supports VIN auto-detection, cylinder contribution/balance testing, turbo actuator control, EGR system tests, and more — all without needing dealer software.

🤝 Designed & Supported in the USA

The YOUCANIC UCAN-HD-A is proudly designed and supported in Towson, Maryland USA. We're not an overseas brand — we're a team of real technicians and engineers based in Towson, MD who understand diagnostics because we use them too.

We're here to help you get the job done — fast and right. When you buy YOUCANIC, you’re not just getting a powerful scanner — you’re gaining a support team that’s got your back.