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AutoIQ works with OBD-II USB adapters that use standard protocols (e.g. ELM327-compatible, or direct J2534). Bluetooth/Wi‑Fi adapters are not supported in the current desktop version.

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Supported adapter types

  • ELM327-based USB — Most USB OBD-II dongles that emulate ELM327 (e.g. CH340, CP2102, or FTDI serial chips) are supported. AutoIQ talks to them over the virtual COM port.
  • J2534 pass-through — If your adapter ships with a J2534 DLL, AutoIQ can use it when configured for that device. Check the adapter’s documentation for J2534 support.
Prefer adapters that expose a single, stable COM port and have a signed or widely used driver. Avoid the cheapest no-name dongles; they often have flaky firmware or drivers.

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Driver tips

1

Install the adapter driver first

Before plugging in the adapter, install the driver from the manufacturer’s site or the CD/download that came with the device. This reduces “unknown device” or port conflicts.
2

Note the COM port

After plugging in, check Device Manager → Ports (COM & LPT) and note the COM port number (e.g. COM3). In AutoIQ, select this port when connecting.
3

If the driver is unsigned

Windows may block unsigned drivers. See Install on Windows for options (e.g. temporary disable of driver signature enforcement for trusted hardware only).

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Troubleshooting

Ensure the driver is installed and the adapter is plugged in. Restart AutoIQ. If it still doesn’t appear, try another USB port or cable; some cables are charge-only.
Turn the vehicle ignition to ON (engine can be off). Ensure the OBD-II port has power. Try a different COM port or baud rate if AutoIQ allows manual selection.

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