ECU Coding App for iPhone and Android

CarCoding is a mobile application for iPhone and Android that connects to an ELM327 BLE OBD2 adapter to perform ECU coding. The app supports a catalog of 1687 vehicles across 146 brands. Coding data is currently available for 924 vehicles from 38 specific brands.

Vehicles with coding
924
Makes
38
Coding modules
596

The application provides access to 596 coding modules for supported vehicles. Brands with the most coding data include Toyota, Volkswagen, Ford, Lexus, BMW, Audi, Hyundai, Renault, Peugeot, Skoda, Seat, and Citroën. This list represents a portion of the supported makes.

What is car coding, and how is it different from chip tuning? →

ECU coding by make

Frequently asked questions

Which app does ECU coding from a phone?

CarCoding does ECU coding on iPhone and Android: coding data exists for 924 vehicles across 38 makes. An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone and Android and is free to download.

Which makes can be coded?

The makes with the most coding data: Toyota, Volkswagen, Ford, Lexus, BMW, Audi, Hyundai, Renault, Peugeot, Skoda. Each make has its own page below.

Which adapter do I need?

An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone and Android and is free to download.

How do I start?

  1. Plug an ELM327-compatible OBD2 adapter into the car.
  2. Open CarCoding and connect to the adapter over Bluetooth.
  3. Pick the make and model — or let the VIN identify it.
  4. Read fault codes; on supported vehicles, open the module settings.

Get CarCoding

Connect your ELM327 adapter, read fault codes, and browse module settings on supported vehicles.

The app is free to download.