WOBD · Free car diagnostics in your browser

WOBD

Year Make Make (other) Model

Demo How to use

WOBD is in active testing and development. Results aren't guaranteed yet, so double-check anything important with a mechanic.

Not connected

Code	Description	Urgency

Click a code link to open Bob.

Connect to your car, then click Scan to read its trouble codes.

Parked or passenger only. Don't watch live data while you're driving.

Bob

?

This browser can't reach the adapter

WOBD talks to your adapter through Web Serial, which only works in Chrome, Edge, or Opera on a computer, or Chrome on a Chromebook. Open this page in one of those and I'll be right here.

How to use WOBD · Look around in demo mode

Bob

WOBD gives general information, not a professional diagnosis. Always confirm a problem before replacing parts.

Free and open source. Your scan data never leaves this computer.

Clear trouble codes?

This turns off the check engine light, but it also resets your car's emissions readiness monitors.

If you're going for an emissions inspection soon, don't clear. The car has to drive for a while before it's ready again, and it can fail until then.

The ignition is on and the engine is off.