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.

Cars CoveredConnect
Vehicle Coverage

Cars Covered

Manufacturer groups supported for full module-level scanning. Any OBD-II compliant car also connects via the generic profile for live data and fault codes.

Generic OBD-II1 models
All OBD-II compliant vehicles — standard live data & fault codes (1996+ US, 2001+ EU petrol, 2003+ EU diesel)
VAG (Volkswagen Group)4 models
Volkswagen
Audi
Seat
Škoda
BMW Group2 models
BMW
Mini
Ford2 models
Ford
Lincoln
Toyota / Lexus2 models
Toyota
Lexus
Mercedes-Benz2 models
Mercedes-Benz
Smart
Vauxhall / Opel (GM)3 models
Vauxhall
Opel
Holden
Honda2 models
Honda
Acura
Hyundai / Kia3 models
Hyundai
Kia
Genesis
Nissan3 models
Nissan
Infiniti
Datsun
Volvo2 models
Volvo
Polestar
Renault / Dacia3 models
Renault
Dacia
Alpine
Peugeot / Citroën (PSA)3 models
Peugeot
Citroën
DS
Fiat / Alfa Romeo4 models
Fiat
Alfa Romeo
Lancia
Abarth
Mazda1 models
Mazda
Subaru1 models
Subaru
Suzuki2 models
Suzuki
Maruti
Mitsubishi1 models
Mitsubishi
Jaguar / Land Rover3 models
Jaguar
Land Rover
Range Rover
Porsche1 models
Porsche
Tesla4 models
Model S
Model 3
Model X
Model Y
BYD3 models
BYD Atto 3
BYD Seal
BYD Dolphin
Geely3 models
Geely
Zeekr
Lotus
Saic / MG3 models
MG
Maxus
Roewe
Tata2 models
Tata
JLR
Mahindra2 models
Mahindra
SsangYong

Connect & Diagnose

Connect an ELM327 reader over Bluetooth to scan codes and view live data.