OBD2 Scanner
Connect ELM327 adapter via USB to automatically read your vehicle VIN and error codes.
Connect the ELM327 USB adapter to your vehicle OBD2 port, then click the button below.
Auto-detected from VIN (vehicle identification number)
VIN was not read automatically. Select brand to decode error codes.
Preparing...
Turn off the engine before clearing.
Cylinder monitoring
E300 BlueTEC Hybrid — live parameters
ELM327 provides access to ECM (engine control module) only. BMS (battery management system), HCU (hybrid control unit), DPF (diesel particulate filter) %, AdBlue, SOC (state of charge) are not readable. For full diagnostics: iCarSoft MB II, Autel, Launch.
Transmission adaptation requires specialized scanner
Throttle adaptation is manufacturer-specific Clears DTC (diagnostic trouble codes), freeze frame (frozen frame), misfire (fuel not burning in cylinder) counts
Frequently asked questions
Is the Kareta OBD USB scanner free?
Yes for supported browsers and adapters within normal site rate limits. Logged-in users may access extended recording features.
Which browsers support USB OBD on Kareta?
Chrome, Edge, and other Chromium browsers with Web Serial on desktop typically work. Safari and most mobile browsers do not support USB serial.
Can Kareta read all manufacturer-specific codes?
The tool reads standard OBD2 DTCs and enriches them with Kareta brand knowledge. Proprietary manufacturer codes may require dealer diagnostics.