- Model years
- 2021–
- Engine options
- 3
- Make-wide fault codes
- 5,180
CarCoding is an app for iPhone, Android and Windows that works with an ELM327 OBD2 adapter. It covers the Mercedes-Benz Citan II (W420) from 2021 onward, including 110 1.3 102HP, 110 CDI 95HP and eCitan 45kWh 122HP. For this vehicle, the available coding data is none, so no ECU coding settings changes are listed.
CarCoding supports fault code reading and clearing for the Mercedes-Benz Citan II (W420) on iPhone, Android and Windows. Manufacturer fault code descriptions available: 5180. Live data can be viewed with an ELM327 OBD2 adapter.
Supported coding modules
No coding modules are defined for this vehicle in CarCoding. Fault code read/clear and live data work over OBD2.
Engine options
- 110 1.3 102HP
- 110 CDI 95HP
- eCitan 45kWh 122HP
Fault codes for this make
There are 5,180 manufacturer fault code descriptions for Mercedes-Benz · Smart. Open a code block and read what your code means.
Frequently asked questions
What does CarCoding do on the Mercedes-Benz Citan II (W420)?
CarCoding reads and clears fault codes and shows live data over OBD2 on the Mercedes-Benz Citan II (W420) (2021–). No coding modules are defined for this vehicle.
Can I read fault codes on the Mercedes-Benz Citan II (W420)?
Yes. Besides standard OBD2 engine codes there are 5,180 manufacturer fault code descriptions for this make group; you can read and clear them.
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?
- Plug an ELM327-compatible OBD2 adapter into the car.
- Open CarCoding and connect to the adapter over Bluetooth.
- Pick the make and model — or let the VIN identify it.
- Read fault codes; on supported vehicles, open the module settings.
Related pages
Get CarCoding
Connect your ELM327 adapter, read fault codes, and browse module settings on supported vehicles.
The app is free to download.