Citroën ECU Coding App

CarCoding supports ECU coding on Citroën vehicles. Its catalog lists 46 vehicles, and 27 of them have coding data; manufacturer fault code descriptions number 7087. Examples include Berlingo II (B9) (2008–2018), C3 (SC2) (2016–), C4 / ë-C4 (2020–), and C4 Picasso (2006–2013).

Vehicles with coding
27
Vehicles in catalogue
46
Manufacturer fault codes
7,087

Settings available for coding data include BSI2010Evo Multiplex Fuel Additive Pump, BSI2010Evo Steering Wheel-Mounted Switch, BSI2010Evo Seat Belt Reminder, and BSI2010Evo Battery Charge Status Unit. Other examples are BSI2010Evo Airbag, BSI2010Evo Motor Control Unit, BSI2010Evo Driver's Door Control Panel, and BSI2010Evo Smart Switching Unit.

Examples of codeable settings

Models with coding data

Citroën — all supported models →

Frequently asked questions

Which app does ECU coding on Citroën vehicles?

CarCoding does ECU coding on Citroën vehicles from your phone; coding data exists for 27 vehicles. An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone, Android and Windows and is free to download.

Which Citroën models can be coded?

Some of the models with coding data: Berlingo II (B9) (2008–2018), Berlingo III (K9) (2018–), C-Elysée II (2012–), C3 (SC2) (2016–), C3 Aircross (2017–), C3 III (2021–). The full list is on this page.

Which adapter do I need?

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