Your bike's down. The dealer's booked two weeks out. And they charge hundreds just to tell you what's wrong.

Every Harley rider knows this math: $100 to $300 for the tow, days or weeks on the lift waitlist, then a diagnostic fee just to be told what your bike was already trying to say.

V-Twin Diagnostics is the Harley diagnostic tool that ends that. Answer questions about what your bike is doing, what you see, hear, and feel. The app walks the same systematic process a trained tech uses and lands on the probable cause in minutes. No code reader. No hardware. No waiting.

Check engine light on? Start from the code. Start from the symptom. Either way the guided path reads your Harley's diagnostic trouble codes and behaviors the way a dealer scan tool session would, without the scanner, the appointment, or the fee.

ONE DIAGNOSTIC PASS. EVERYTHING BELOW IS IN IT:
• Guided Diagnostic Path: proprietary step-by-step troubleshooting built for your exact year and model
• Comprehensive Diagnostic Report: complete specs, related trouble codes, the full path you followed, and findings, saved to your bike's profile
• Circuit Diagrams and Component Cards: see the actual system behind each probable cause
• A Parking Spot in Your Garage: your bike's profile with full specs, notes, and history
• Diagnostic History: every run saved, ready to review or export as a PDF

PAY ONLY WHEN YOUR BIKE NEEDS IT. NO SUBSCRIPTION REQUIRED.
• Diagnostic Pass, $9.99: one complete diagnostic. Never expires.
• 3-Pack, $24.99: bank them for when it counts.
• Annual License, $59.99/yr: unlimited diagnostics for every bike in your garage, less than half of one dealer diagnostic fee, plus the annual-only Mechanic's Checklists.

FREE FOR EVERY RIDER, NO ACCOUNT NEEDED:
• DTC code lookup: 71 Harley diagnostic codes and trouble codes in plain English with probable causes
• Torque specs: 119 specs for Twin Cam and Evolution Sportster
• Recommended service intervals by mileage

FREE WITH AN ACCOUNT: a parking spot for your bike and the Oil Change Service Scheduler, free oil-change reminders matched to your bike and mileage.

Covers fuel-injected Harley-Davidson motorcycles, model year 2007 to current — Evolution Sportster, Twin Cam, Milwaukee-Eight and Revolution Max: Sportster, Dyna, Softail, Touring, Trike and Pan America, including CVO and police variants.

It's YOUR bike. It's been talking to you this whole time. Now you speak the language. The Harley Davidson diagnostic tool that lives in your pocket.

V-Twin Diagnostics is an independent aftermarket reference tool, not affiliated with or endorsed by Harley-Davidson.

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