Welcome to C15-OBD

Before you get started, please read this important notice.

AI Diagnostic — No Reader Needed

AI Diagnostic doesn't need an OBD-II reader: enter your fault codes or describe your symptoms and get step-by-step repair guidance instantly. It's part of C15-OBD Premium, which starts with a 7-day free trial.

No Liability

We accept no liability for any damage caused to your vehicle or any other property while using this app. The app is used entirely at your own risk.

WorkshopConnect

Subscribe to Access

Unlock the diagnostic tools with C15-OBD Premium from £5/month, or PRO to add the workshop, customisations and van & HGV coverage. Start with a 7-day free trial.