Guide
Guide articles about platform coverage, hidden features and vehicle technology, powered by real data.
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Guide articles
What Is OBD2? Vehicle Diagnostic Port & Live Data
What is OBD2, which vehicles have it, and how does it read live sensor data and fault codes? We explain the OBD2 diagnostic port, its protocols and how it works.
Read articleWhat Is a VIN Number? First 3 Characters Explained
What is a VIN number, what do its 17 characters mean, and how do the first 3 characters (WMI) identify the manufacturer? Learn deterministic VIN decoding.
Read articleVAG Hidden Features Guide (VW, Audi, Seat, Skoda)
What are VAG hidden features and which comfort settings can be enabled on VW, Audi, Seat and Skoda cars? A real-data-driven guide to reversible comfort coding with clear safety boundaries.
Read articleRenault Hidden Features Guide (Renault and Dacia)
What are Renault hidden features and which comfort settings can be enabled on Renault and Dacia cars? A real-data-driven guide with safety notes.
Read articleWhat Are Manufacturer-Specific Codes? (P1, C1, B1, U1)
What are manufacturer-specific codes, how do they differ from standard OBD2 codes, and why must they be interpreted per brand? We explain P1, C1, B1 and U1 codes.
Read articleRenault Platform & Family Architecture (Project Code)
What is Renault platform/family architecture (Project_Code), which vehicles does it cover, and how many categories exist in the real catalog data? A data-driven guide.
Read articleRenault BCM and Comfort-Lighting Coverage
Which settings can be configured in Renault body control module (BCM) and comfort-lighting categories? A coverage guide based on real catalog data.
Read articleP0420 Fault Code: Meaning, Symptoms and Causes
What does fault code P0420 mean, how is it related to the catalytic converter and oxygen sensors, and what are its symptoms and probable causes? We explain what a workshop typically checks.
Read articleOBD2 Adapter Compatibility: Is My Car Compatible?
How do you know if an OBD2 adapter is compatible? Does your car support the OBDII/EOBD standard, which year and market rules apply, what are the connectors and protocols, Bluetooth or Wi-Fi? An honest way to check your vehicle’s compatibility.
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Frequently asked questions
The most common questions about OBDII/EOBD compatibility and adapters.
- What is the difference between OBDII and EOBD?
- OBDII is the North American name of the on-board diagnostics standard, while EOBD is its European legal counterpart. In practice the diagnostic logic, the fault codes and the physical 16-pin connector are the same, so an OBD2 adapter also works on an EOBD-compliant vehicle. The difference is mainly about which vehicles are required to support the standard and from which model year.
- Is my vehicle OBDII/EOBD compatible, and how do I tell?
- As a general rule, petrol vehicles sold in Europe support EOBD (i.e. OBDII) from the 2001 model year and diesels from 2004; almost all vehicles newer than these have a standard 16-pin connector under the dashboard on the driver’s side. The most reliable way is to look for that connector in your car and check coverage in the app using your own make/model/year.
- Which OBD2 adapter should I choose?
- Aracım Cepte is designed to work with ELM327-based Bluetooth adapters, higher-quality solutions such as OBDLink, and generic BLE OBD2 adapters. For a stable connection we recommend choosing an adapter with a reliable chipset rather than a very cheap low-quality clone. The adapter choice does not change vehicle compatibility; it only affects connection quality and reading stability.
- Does compatibility guarantee that every feature will work?
- No. OBDII/EOBD compatibility means you can read standard fault codes and basic live data. Hidden-feature coverage and some advanced data, however, vary by vehicle, model, year, trim and ECU. That is why we show coverage figures live from the app and explicitly say “no data” when a value is unavailable; we never fabricate a number.