Compatibility tested by Louro
Plug it in once. It works on the car you have now, and on the one after that. We have tested two third-party adapters for compatibility with Louro.
Buy once
OBD-II has been mandatory on US gasoline cars since 1996 and diesels since 1997 — same port, same place, same protocol. An adapter that reads one car reads the rest.
Sell the car, keep the scanner. It pulls out from under the dash and goes into the next one in about four seconds. Nothing to re-buy, nothing to set up again.
Everything that gets smarter — the explanations, the history, what Opie notices — ships in Louro. The adapter's job is to read the port, and that job does not change.
What it turns your phone into
The adapter is the small half. What it plugs into is the point.
Pull the fault code and the freeze frame that came with it, then read what it means for your car — not a four-character string you have to go and search.
Live gauges streamed from the port to your phone, while the engine is running.
Each scan is saved to that car, so Opie can tell you what is new since last time instead of starting from nothing.
Check whether your car's readiness monitors have set before you drive to an emissions test, rather than finding out in the queue.
The list
The links below are affiliate links: Louro may earn a commission if you buy through them, at no extra cost to you. It does not influence which adapters we test. We chose these two before there was any commission attached, and an adapter cannot pay its way onto this page.
What we use at Louro
The adapter Louro is developed against. It connects quickly, holds the connection through a full scan, and returns every reading Louro asks for — fault codes, freeze frame, readiness monitors and live data.
Affiliate link · price and availability live on Amazon
The affordable one
The more affordable option we have verified end to end. It pairs with the app, completes a scan, and reports codes and freeze frame data correctly.
Affiliate link · price and availability live on Amazon
The standard
OBDLink MX+ is an OBDLink product. The OBD2 Bluetooth Scanner is sold under the LJPXHHU brand. Louro does not manufacture either scanner and has no sponsorship or endorsement agreement with either brand. Compatibility tested by Louro means we tested the listed functions with our app on a real car. It does not mean manufacturer approval or a guarantee for every vehicle or feature.
How a scan goes
In the United States that means a gasoline car from 1996 or later, or a diesel from 1997 or later.
Wi-Fi adapters are not supported, because iOS cannot stay on your home network and the adapter at the same time.
Louro reads what your car reports. Nothing it finds should be repaired without someone who can put the car on a lift.
Codes, recalls, records and Opie all work before any hardware arrives. Add the adapter when you want the car talking back.
Using one that isn’t on this list? Tell us and we will test it.
