Support

V-Twin Diagnostics — We're here to help

Need help with the V-Twin Diagnostics app? Whether you're experiencing a technical issue, have a question about your subscription, or want to provide feedback, we're here to assist you.

Contact Us

Email: support@vtwindiagnostics.com

Response: We typically respond within 24–48 hours

Frequently Asked Questions

Which motorcycles does the app support?

Fuel-injected Harley-Davidson motorcycles, model year 2007 to current — Evolution Sportster, Twin Cam, Milwaukee-Eight and Revolution Max. Sportster (Evolution 883/1200 2007–2022; Revolution Max Sportster S and Nightster 2021–current), Dyna (Twin Cam 2007–2017), Softail (Twin Cam 2007–2017; Milwaukee-Eight 2018–current), Touring (Twin Cam 2007–2016; Milwaukee-Eight 2017–current), Trike (Twin Cam 2009–2016; Milwaukee-Eight 2017–current), Pan America (Revolution Max 2021–current), and CVO in every family. Not covered: pre-2007, carbureted, Magneti Marelli EFI, V-Rod/VRSC and LiveWire.

How do I cancel my Annual License?

The Annual License is managed through your device's app store. On iOS, go to Settings → Apple ID → Subscriptions. On Android, go to Google Play Store → Menu → Subscriptions. You can cancel at any time and keep access until the end of your current period. Diagnostic Passes are one-time purchases — there is nothing to cancel, and they never expire.

Do Diagnostic Passes expire?

No. A Diagnostic Pass never expires. Buy a 3-Pack and bank them for when you need them.

Can I use the app on multiple devices?

Yes. Your garage profiles, diagnostics, service records, and Diagnostic Passes are stored on your account, not on your device, so they follow you between the iOS app, the Android app, and the web version whenever you sign in. The Annual License is tied to the store account you bought it with — use Restore Purchase on a new device to re-activate it. Diagnostic Passes are recovered by signing in.

I forgot my password. How do I reset it?

On the login screen, tap "Forgot Password?" and enter your registered email address. We'll send you a password reset link. If you signed up using Sign in with Apple or Sign in with Google, use that provider's recovery flow instead — you won't have a separate password to reset.

Is the diagnostic information a substitute for a service manual?

No. The app is a reference and diagnostic aid designed to help you identify common issues. For critical repairs, safety-related work, or detailed procedures, always consult your motorcycle's factory service manual and/or a qualified technician.

How do I request a refund?

Refunds are handled by Apple or Google according to their respective store policies. Visit Apple's refund page or Google Play's refund page for instructions.

I found an error in the diagnostic data. How do I report it?

We appreciate your feedback. Please email us at support@vtwindiagnostics.com with the specific diagnostic path, step, or specification in question, and we'll review and correct it in a future update.

Pricing

V-Twin Diagnostics is sold as one-time Diagnostic Passes and an optional Annual License. There is no monthly subscription and no free trial.

Diagnostic Pass — $9.99. One complete guided diagnostic, including the Comprehensive Diagnostic Report saved to your motorcycle's profile. Never expires.
3-Pack — $24.99. Three Diagnostic Passes at a reduced price. Never expire.
Annual License — $59.99/year. Unlimited diagnostics and reports, plus the Pro Tools.

What a Diagnostic Pass includes:

Guided Diagnostic Path — Symptom-based troubleshooting across 12 systems that narrows to the probable cause
Comprehensive Diagnostic Report — Full specifications, DTC codes, the path you took, and the component cards and circuit diagrams for that diagnosis, saved to your motorcycle's profile
Garage access — Any purchase unlocks your garage, up to 5 motorcycle profiles
Diagnostic history — Every completed diagnostic saved and reviewable

What the Annual License adds (Pro Tools):

Unlimited diagnostics and reports
Checklists — Pre-Ride Checklist, General Health Check, Battery & Charging Check, Comprehensive EFI Health Check, and Pre-Purchase Inspection
Complete motorcycle specifications for your exact year, model, and engine
Illustrated component cards — the full library, browsable at any time
Operational circuit diagrams — the full library, browsable at any time
Garage access for up to 20 motorcycle profiles
All future updates and new diagnostic content

Free — no account required:

DTC Code Lookup — 854 diagnostic trouble codes with their meaning by model year, and probable causes for the most common codes
Torque Specifications — 119 specs for Twin Cam and Evo Sportster engines
Service Intervals — Recommended maintenance schedules by mileage

Free with an account:

Oil Change Tracker — Odometer-based reminders for engine oil (including filter changes), primary, and transmission, each tracked on its own interval, with optional email notifications

App Information

Developer: Classified AI LLC
Website: vtwindiagnostics.com
Privacy Policy: vtwindiagnostics.com/privacy-policy
Terms of Service: vtwindiagnostics.com/terms