Frequently Asked Questions

YOUCANIC provides step-by-step instructions, guides, and tutorials for common car issues, accessible at youcanic.com/vehicles and https://www.youtube.com/@YOUCANIC.

Before you place your order, you can check compatibility using our compatibility checker (https://coverage.youcanic.com/) or by emailing YOUCANIC support (support@youcanic.com). In your email, please include your car’s VIN and list the special functions you want to use.

Our scanners, both new and open box, come with a one-year warranty. If your scanner arrives damaged or comes with a faulty VCI, you’re fully covered and can return it to us within the one-year window for a repair or replacement at no extra cost.

Returns are accepted within 31 days of delivery, and there is no restocking fee on your first return. YOUCANIC will provide a discounted return shipping label and deduct a small amount from your total refund to cover return shipping costs.

If you aren’t satisfied with your scanner, email us! Returns are accepted within 31 days of the delivery date. We will send you a return shipping label for your order.

1. Pack the item securely, and make sure all items are in the box.
2. Include your order number in or on your box.
3. Ship the package to us at 606 Baltimore Ave, Suite 405, Towson, MD 21204
4. We typically process returns within 24 hours, but it may take 2-4 business days for the refund to be reflected in your account.

If you placed an order by mistake, email YOUCANIC support right away, and we can cancel it for you. Our fulfillment team processes orders fairly quickly during regular business hours, so it is important to reach out sooner rather than later.

We pack and ship orders fairly quickly, so please email us right away! We can update your address before it is shipped out.

Visit the DTC Library on YOUCANIC’s website (https://www.youcanic.com/fault-codes/) to find definitions and troubleshooting tips for thousands of codes.

If you contact YOUCANIC Support, one of our technicians can help you make sense of complicated fault codes. Alternatively, our latest scanner, the UCAN-II-C Pro, has an AI assistant that can give you potential fixes for issues in your car if you ever get stuck.

No, YOUCANIC only carries car repair tools. If you need replacement parts for your car, look on eBay.

YOUCANIC offers a 31-day money-back guarantee on physical purchases through its shop. If you’re not satisfied with your purchase, you can return the item for a refund within 31 days of delivery. The product must be in its original condition, including accessories and packaging. If you return the same item more than once, a 10% restocking fee will apply. U.S. residents will be sent a return shipping label, but the cost of the return label will be deducted from the total refund.

Refunds are typically issued within 24 hours, except for weekend returns, which will be processed and refunded on the next business day. It may take 2-4 business days for the refund to be reflected in your bank account.

Our YOUCANIC shop operates using Shopify. If you don’t want to pay the full amount up front, you can pay for your order with Shop Pay, which operates through Affirm.

YOUCANIC accepts standard online payment methods at checkout, including Credit/Debit cards and PayPal for subscriptions as well as shop purchases. You’ll see available payment options during the checkout process.

Yes, YOUCANIC allows you to cancel your free or premium subscription at any time. If you cancel within the first 30 days of service, you may qualify for a refund. Subscriptions canceled after 30 days do not qualify for a refund. If you need further assistance, you can contact YOUCANIC Support at support@youcanic.com.

Our scanners provide full-system diagnostics, covering engine, ABS (anti-lock braking system), transmission, SRS module, live data, bi-directional tests, service resets, DPF regeneration, and battery adaptations. As an added bonus, our scanners operate without subscription fees.

The YOUCANIC UCAN-II-B and UCAN-II-C scanners feature identical hardware; the distinction lies in the software capabilities. Both models support full-system diagnostics, live data streaming, fault code clearing, active tests (bidirectional control), and comprehensive coverage across all major makes and models. Each scanner includes 40 advanced maintenance functions such as electronic parking brake (EPB) reset, battery registration, steering angle sensor calibration, and injector coding. However, the UCAN-II-C version is equipped with enhanced software that enables module coding and configuration—critical when replacing components like a body control module (BCM), where reprogramming is required. The UCAN-II-B lacks these advanced coding features but retains the same diagnostic and maintenance utility, making the C version more suitable for users needing deeper control over module replacement and adaptation procedures.

1. Try using a different charger. Any charging cable/wall adapter will work as long as it isn’t a fast charger. (5V , 500mA-2A, USB-C)
2. Try charging your scanner using a computer or laptop. Leave it plugged in with the computer/laptop turned on for a couple of hours to confirm that the scanner isn’t charging at all.
3. If the scanner isn’t turning on or charging, contact YOUCANIC support. We can replace the battery for you, but if it isn’t under warranty, you will be charged a $67 service fee.

You will need a Mercedes-Benz 38-pin adapter for some pre-2000 Mercedes-Benz models.

We recommend starting by registering and updating your scanner. Running software updates will ensure your scanner is up to date with the latest diagnostic software YOUCANIC has to offer.

Performing regular software updates ensures your scanner is up to date with the latest diagnostic features. To update your scanner, go to the Updates app on the second page of the homescreen, and tap the Update All button at the bottom of your screen.

Our software development team releases software updates regularly, so we recommend checking for updates once a month or once every other month.

To update the firmware on your scanner,

Although you will need to connect to the internet to email a report or run software updates, you can scan your car and run special functions without connecting your scanner to the internet.

To connect your scanner, go to Settings > System Settings > Network & Internet> Yes go to Settings → WiFi connect to a network , then enable Remote Support if needed for technician assistance

If you ever run into an issue with your scanner when working on something in your car, you can tap the pen symbol at the top of your screen to upload data for our tech support team to review.

First, you need to delete the software in the Diagnostic tab of your scanner. Press and hold down on an available option until a small x appears at the top right of all available vehicle makes. Tap on the X on the models you want to remove.

Next, go to the Updates app and select Ignore Updates. Make sure all the vehicle makes you removed in the Diagnostic tab are selected, then go back to the main updates page and make sure your scanner is fully updated.

To reinstall deleted software, go to the Updates app and select Ignore Updates. Deselect the vehicle make, and run all software updates.

Yes, our UCAN-II-C scanner, with its advanced features, can perform DPF regeneration, service resets, battery adaptations, and lots of other maintenance functions.

After identifying the diagnostic trouble codes (DTC), select the Clear Code button in the Control Modules menu. Codes will only properly clear if the underlying issue is resolved.

As long as the battery meets manufacturer specifications, yes, you can replace your battery with a non-OEM battery. Before you go ahead with the replacement, reach out to YOUCANIC Support! If your scanner’s battery is faulty and you have had your scanner for less than a year, a battery replacement might be covered by your warranty!

You can use your scanner to perform a quick full‑system scan across all vehicle modules and clear all stored fault codes in one step. This helps you diagnose issues from multiple systems (engine, ABS, transmission, etc.) and reset the codes once repairs are done.

Watch this video for a step‑by‑step walkthrough: https://youtu.be/pmX5HX11di4

When you scan your vehicle with a diagnostic scanner, such as the YOUCANIC scanner, you’ll often see two types of diagnostic trouble codes (DTCs): current and stored. Current fault codes refer to the issue the vehicle’s system is detecting right now; these indicate active problems that are currently present. Stored fault codes are issues that were detected in the past and recorded by the vehicle’s computer, even if they’re not active at the moment. Understanding the difference help you determine whether a problem is going or has already been resolved but left a record in the system
https://www.youtube.com/watch?v=UaeY0Gj42-U

To run a pre-scan, go to Diagnose, select your make, then select SmartVIN. Run a Quick Scan, save the report, then clear all codes. Drive your car for at least 30 minutes before scanning your car again. Any code that comes back after you scan your car for the second time needs to be addressed before the code disappears.

You can register your scanner by going to My Account, selecting Sign in, then pressing Free Registration. Enter your email, add the verification code sent to your inbox, then create a password!

We sell replacement VCI adapters on our website. (https://shop.youcanic.com/products/youcanic-ucan-ii-b-bluetooth-vci-adapter?_pos=1&_psq=vci&_ss=e&_v=1.0) Once your new adapter has been delivered, follow this guide: https://www.youcanic.com/how-to-connect-a-new-vci-adapter-to-your-youcanic-scanner/ to pair your new adapter!

To take a screenshot on your scanner, press the power button twice. To view that screenshot later, go into the Data manager app on the first page of your scanner, and select Screenshot.

After running a scan on your car, your scanner will give you the option to save, email, or print the report. To print, select Report, and on the following screen, press the Save and Print option. If your scanner does not connect to your printer, go to Settings, select Print settings, then Print Service Manager. ON the following screen, select Mopria Print Service and make sure it is turned on and your printer appears as an available print option.

The YOUCANIC UCAN-HD-A Heavy-Duty Truck Scanner is a professional‑grade diagnostic tool built to help technicians, fleet managers, owner‑operators, and DIY mechanics diagnose and maintain heavy‑duty diesel vehicles. It supports Class 4–8 trucks, buses, and off‑highway equipment from many major manufacturers, such as Cummins, Volvo, PACCAR, CAT, Isuzu, Hino, and more. The scanner delivers full‑system diagnostics, live data, active tests, and special functions, all without subscription fees, making it a versatile solution for everyday heavy‑duty maintenance and troubleshooting

The YOUCANIC Heavy Duty Truck Scanner supports a wide range of Class 4–8 diesel trucks, buses, and off‑highway equipment. This includes popular OEMs such as Freightliner, Volvo, International, Kenworth, Peterbilt, Mack, Hino, Isuzu, and more. It also works with major engine systems such as Cummins, Detroit Diesel, PACCAR, CAT, and Volvo engines. For detailed compatibility, refer to the scanner’s builtin vehicle list or the product documentation to confirm support for your specific year and model.

This scanner provides comprehensive diagnostic coverage and advanced features. It can read and clear codes from multiple vehicle systems (engine, transmission, ABS, SRS, BCM, HVAC, TPMS, etc.), display live sensor data and merge graphical PID data, and perform bidirectional active tests. This scanner also includes smart functions like forced DPF regeneration, injector cut-off and coding, cylinder balance testing, speed limiter adjustment, ABS bleeding, SCR/DEF diagnostics, and various sensor resets. You can update it over Wi-Fi and generate printable reports directly from the device.

To perform a forced Diesel Particulate Filter (DPF) regeneration, first connect the scanner to the truck’s OBD port and power it on. Select the DPF system from the main menu, then choose Forced Regeneration. Follow the on‑screen prompts to confirm engine temperature, vehicle status, and any required pre‑conditions (such as parked position and engine at idle). Once all conditions are met, the scanner will initiate the regeneration process to burn off accumulated soot. Always ensure the truck is in a safe area and follow manufacturer guidelines before starting the procedure.

TO update the scanner, connect it to WiFI then go to Settings then Software Update menu. The device will check for the latest firmware and vehicle database updates. Install any available updates by following the prompts. Keeping the software up to date is important because it ensures you have the latest vehicle protocols, diagnostics coverage, and bug fixes, which improves compatibility with newer truck models and enhances overall performance.

After connecting to the vehicle and selecting the appropriate system, choose Live Data from the menu. You can view multiple sensors simultaneously, graph data over time, and even export and save data logs if your scanner model supports reporting features. This is useful for diagnosing intermittent issues and monitoring system performance during testing.