YOUCANIC UCAN-HD-A Heavy Duty Diesel Truck Scanner, Full System, Free Updates
Easy Returns
If you don't love it, return it within 31 days. No questions, no stocking fees.
Heavy Duty Diagnostics For Trucks, Buses And Equipment. One Price. No Subscription.
The YOUCANIC UCAN-HD-A is a full system diesel scanner for Class 4 to 8 trucks, buses and off highway equipment, with forced DPF regeneration, injector cutoff, bidirectional tests, free updates and technician support from Baltimore, Maryland.
Built for working technicians, fleet managers and owner operators who need dealer level functions every day without dealer software, laptop logins or annual renewal fees. Plug in the wireless VCI, let the scanner identify the vehicle by VIN, and get to the fault in minutes.
Why Fleets And Diesel Techs Choose The UCAN-HD-A
Most heavy duty scan tools under $1,000 read codes and stop there. The UCAN-HD-A gives you the functions that actually get a truck back on the road: forced regeneration, injector cutoff, governor settings, SCR and DEF tests, and bidirectional control of the components you are chasing.
What You Get
- ✅ Wireless Bluetooth VCI. Work from the cab, the engine bay or under the truck without a cable back to the tablet.
- ✅ Full heavy duty adapter kit included. 9 pin and 6 pin Deutsch connectors, OBD2 and more, in a rugged carrying case.
- ✅ Forced DPF regeneration. Stationary and driving regen, ash service regen, with soot level, exhaust temperature and regen history on screen.
- ✅ Injector cutoff, injector coding and cylinder balance. Find the weak or dead cylinder, then code the replacement injector.
- ✅ Road speed and engine governor settings. View and set the speed limiter and adjust idle RPM on supported engines.
- ✅ SCR and DEF diagnostics. Reset fluid levels, monitor NOx sensors, test the DEF doser pump.
What Stands Behind It
- ✅ Free software updates. No subscription and no annual renewal. The tool keeps working whether or not you update it.
- ✅ US based technician support. Call 1-888-959-4265 or email support@youcanic.com and reach people who use these tools.
- ✅ Remote assistance. Our technicians can connect to the scanner through TeamViewer and walk a procedure with you.
- ✅ 12 month warranty and 31 day returns. Full refund, no restocking fee, if it does not do what you need.
- ✅ Designed and supported in Towson, Maryland. Same team, same phone number, for the life of the tool.
- ✅ YOUCANIC guides and videos on diagnostics and repairs, free.
What Heavy Duty Diagnostics Usually Cost
OEM software for a single engine maker runs hundreds to thousands of dollars a year in subscriptions, and covers only that maker. Professional heavy duty tablets from the big tool brands start around $2,500 and add annual update fees on top. Most of the cheaper heavy duty readers skip the functions that matter: no active tests, no injector cutoff, and DPF regen that works on some trucks and not others.
The UCAN-HD-A is the price shown above, paid once. Updates are free, there is no subscription, and it covers trucks, buses, engines and equipment across many makers from one tablet.
Which YOUCANIC Scanner Do You Need?
UCAN-HD-A (this page): Class 4 to 8 trucks, buses, diesel engines and off highway equipment, plus light duty trucks and pickups.
UCAN-II Pro: cars, SUVs and light trucks up to 3500 series, with a built in TPMS module and lifetime free updates. If your work is mostly passenger vehicles, start there.
What The UCAN-HD-A Does
Full System Diagnostics
- • Scans engine, transmission, ABS, SRS, body, TCM, TPMS, HVAC and every other module the vehicle reports.
- • Reads and clears fault codes, including permanent DTCs, with freeze frame and ECU information.
- • Identifies the vehicle by VIN and builds the full ECU tree in seconds.
- • Bidirectional active tests: DPF regen, DEF pump, turbo actuators, EGR valve, cooling fans, throttle body, ABS actuators and more.
- • CAN bus pin detection and voltage testing at the diagnostic connector.
- • Daylight readable touchscreen that works with gloves on.
Live Data, Reports And Records
- • Live data from multiple systems, graphed in real time.
- • PID merge: overlay several parameters on one graph for comparison.
- • Record and play back data to catch intermittent faults.
- • Turbo boost, fuel rail pressure, exhaust temperature and DPF differential pressure monitoring.
- • PDF diagnostic reports you can print or email from the scanner.
- • Cloud storage and USB export of job history and logs.
- • Shop manager with vehicle and customer records.
Diesel Service Functions
These are the procedures diesel technicians and fleet managers use most on the UCAN-HD-A. Availability depends on the engine and ECU software; see the coverage note below.
- DPF regeneration: forced stationary regen and driving regen, with soot load, exhaust temperature and regeneration history.
- Ash service regeneration: service regen after filter cleaning or replacement.
- DPF differential pressure monitoring: watch filter restriction live to decide between regen and replacement.
- Injector cutoff test: disable one injector at a time to find the weak or dead cylinder.
- Injector coding: enter calibration codes for replacement injectors.
- Cylinder balance test: cylinder contribution readout to spot misfiring or low output cylinders.
- Road speed limiter: view and set the vehicle speed governor on supported engines.
- Engine speed limit and idle RPM: adjust governor and idle settings on supported engines.
- Engine parameter configuration: change ECU parameters on supported models.
- SCR and DEF: reset fluid level, monitor NOx sensors, test the DEF doser pump.
- EGR tests: command the EGR valve open and closed.
- Turbo tests: activate boost control solenoids and monitor actuator response.
- ABS bleeding: cycle the ABS module after brake service.
- Service and reset functions: oil and service reminder reset, DPF counter reset, TPMS, steering angle sensor and battery resets.
- Diesel emissions diagnostics: NOx related diagnostics and emissions system live data where supported.
Coverage
Heavy and medium duty trucks and buses
- ✓ Autocar
- ✓ Crane Carrier Company
- ✓ Freightliner
- ✓ Fuso (Mitsubishi Fuso)
- ✓ Hino
- ✓ International (Navistar)
- ✓ Isuzu
- ✓ Kenworth
- ✓ Mack
- ✓ Paccar
- ✓ Peterbilt
- ✓ Pierce
- ✓ Sterling
- ✓ UD Trucks
- ✓ Volvo Trucks
- ✓ Western Star
Engines and equipment
- ✓ Cummins
- ✓ Caterpillar
- ✓ John Deere
- ✓ Komatsu
- ✓ Volvo construction equipment
- ✓ Crane Carrier Company
Light duty trucks, vans and pickups
- ✓ Chrysler, Dodge and RAM
- ✓ Ford
- ✓ GM, GMC and Cadillac
- ✓ Honda
- ✓ Kia
- ✓ Mazda
- ✓ Mitsubishi
- ✓ Volkswagen
Before you order, check your truck. Coverage and individual functions vary by brand, model year, engine and ECU software. That is true of every heavy duty scan tool, including dealer tools. Email support@youcanic.com or call 1-888-959-4265 with the VIN, engine make and model year, and our technicians will confirm what the UCAN-HD-A does on that vehicle before you spend a dollar.
Specifications
| Model | YOUCANIC UCAN-HD-A heavy duty diesel scanner |
| Display | 7 inch TFT LCD, daylight readable, works with gloves |
| Operating system | Android 9.0 |
| Processor | Quad core 1.3 GHz |
| Memory and storage | 2 GB RAM, 64 GB storage |
| Battery | 5000 mAh lithium polymer, charges from the included wall charger and USB cable |
| Operating temperature | Minus 10 to 70 C (14 to 158 F) |
| Vehicle connection | Bluetooth VCI with heavy duty adapter kit: 9 pin and 6 pin Deutsch, OBD2 and more |
| Other connectivity | WiFi for updates, cloud storage and remote support; USB for charging and export |
| Protocols | SAE J1939, SAE J1708, SAE J1587, CAN, CAN FD, DoIP, KWP2000, ISO 9141-2, SAE J1850 |
| Updates | Free over WiFi, one touch, no subscription or annual renewal |
| Warranty and returns | 12 month manufacturer warranty, 31 day money back returns |
| Support | US based technicians by phone and email, Monday to Friday 9 AM to 4 PM Eastern, with TeamViewer remote assistance |
| In the box | UCAN-HD-A tablet, Bluetooth VCI, heavy duty adapter kit, wall charger and USB cable, user manual, rugged carrying case |
| Shipping weight | 6.8 lb complete kit |
What UCAN-HD-A Owners Say
"Bought ucan hd after analyzing every scanner on the market. This scanner has performed every task I have tried so far on Cummins and paccar engines."
"I bought it just to read codes because our laptop based manufacturer scan tools take so long to login, but I have been going to this thing every time first. I absolutely like how fast I can get right to it, and customer support was exceptional."
"Arrived fast, works as described and then some. There are a lot of hidden features and a lot of ways to hook up to different equipment. I bought it for off highway use and was able to hook up and diagnose engines that are not even listed."
Frequently Asked Questions
Is there a subscription or annual update fee?
No. Software updates are free and install over WiFi with one touch. There is no subscription and no annual renewal, and the scanner keeps working whether or not you update it.
Will it work on my truck?
It covers Class 4 to 8 trucks and buses from the brands listed above, Cummins and Caterpillar engines, Caterpillar, John Deere and Komatsu equipment, and light duty pickups and vans. Functions vary by engine and ECU software, so email support@youcanic.com or call 1-888-959-4265 with your VIN and engine before you order and we will confirm.
Does it do forced DPF regeneration?
Yes. Stationary and driving forced regeneration, ash service regeneration, and live soot load, exhaust temperature and differential pressure so you can see whether the regen is working.
Can it cut out injectors and code new ones?
Yes. The injector cutoff test disables one injector at a time, the cylinder balance test shows each cylinder's contribution, and injector coding lets you enter calibration codes after a replacement.
Can I change the road speed limiter or idle RPM?
On supported engines, yes. The UCAN-HD-A can view and set the road speed governor, the engine speed limit and idle RPM, and change other engine parameters on supported models.
What connectors are included?
A heavy duty adapter kit with 9 pin and 6 pin Deutsch connectors, a standard OBD2 connector and additional adapters, all in the rugged carrying case with the tablet and Bluetooth VCI.
Is the connection wireless?
Yes. The VCI plugs into the diagnostic port and talks to the tablet over Bluetooth, so you can run tests from the cab or under the hood.
Does it also work on cars and pickups?
It covers light duty trucks, vans and pickups from the domestic and import brands listed above. If most of your work is cars and SUVs, the UCAN-II Pro is the better fit, and it adds a built in TPMS module.
What is the warranty and return policy?
12 month manufacturer warranty, and a 31 day money back return window with no restocking fee.
How do I get help with a procedure?
Call 1-888-959-4265 Monday to Friday, 9 AM to 4 PM Eastern, or email support@youcanic.com. Our technicians can connect to the scanner through TeamViewer and walk through the job with you.
Have another question? Search the full YOUCANIC knowledge base:
Designed And Supported In Towson, Maryland
The YOUCANIC UCAN-HD-A is designed and supported by a team of technicians and engineers in Towson, Maryland who use these tools on their own vehicles. When you buy YOUCANIC you get a scanner and a support team that picks up the phone.
Our Commitment To You
Shipping information
Use this text to share information about your product.
Returns & warranty
Use this text to share information about your product.
