Short answer: you need a scanner that publishes "enhanced" or "all-system" coverage, because the legislated OBD-II standard only guarantees emissions-related engine data. For most owners the BlueDriver Pro is the right buy — published ABS, airbag and transmission coverage, no subscription, works through a phone. The Innova 5610 is the better handheld if you want live ABS and SRS data without a phone, and the Autel MK808S is the one to buy if you need to command the modules rather than just read them.
Why a cheap code reader cannot see your ABS light
Every OBD2 port on a 1996-or-newer US car is required to expose a standard set of emissions-related data, which is why a twenty-dollar reader can pull a P0420 from any car in the parking lot. ABS and airbag modules are not part of that mandate. They sit on the vehicle's internal network behind manufacturer-specific protocols, and reaching them requires the scan tool to know how to talk to that make — which is what "enhanced coverage" means on a box.
This is why two scanners can both be honestly described as OBD2 tools and have completely different answers to "why is my ABS light on." The Autel AL319 and the FOXWELL NT301 in our budget roundup are good tools; neither publishes ABS or SRS coverage, and we treat both as engine and emissions only.
What each scanner publishes
| Scanner | ABS | SRS / airbag | Bi-directional | Format |
|---|---|---|---|---|
| BlueDriver Pro | Yes | Yes | No | Bluetooth dongle + phone |
| Innova 5610 | Yes | Yes | Yes | Corded handheld |
| Autel MK808S | All available systems | All available systems | Yes | 7 in tablet |
| OBDLink MX+ | Yes | Yes | App-dependent | Bluetooth adapter |
| Autel AL319 | Not published | Not published | No | Corded handheld |
| FOXWELL NT301 | Not published | Not published | No | Corded handheld |
The bottom two rows are there deliberately. "Not published" is a statement about the manufacturer's specification page, and we read it the conservative way: if a maker does not claim ABS coverage, assume the tool does not have it. That is the single most common disappointment in this category.
The caveat that applies to all four
Enhanced coverage is make-dependent and model-year-dependent, every time. A tool that reads ABS codes fluently on a Toyota may be shallower on a European car, and every manufacturer in this category words its claims carefully for exactly that reason — "all available systems" means all the systems the tool can reach on your car, not all the systems your car has. Before buying, check the manufacturer's own vehicle coverage list for your make, model and year. It is the only check that answers the question.
Reading the code versus fixing the car
Three of the four tools here read enhanced codes. Two of them — the Innova 5610 and the Autel MK808S — can also command a module, which is a different capability and the one that decides whether some jobs are possible at all. Bleeding an ABS unit after a brake line is opened usually requires cycling the pump through the scan tool. Retracting an electronic parking brake caliper to fit new pads requires putting the module into service mode. Neither job can be done by reading.
If those jobs are in your future, buy a tool that commands. If the ABS light came on once and you want to know why, a reader is enough and a tablet is overkill. The full argument is in bidirectional vs basic OBD2 scanners.
Phone-based or standalone?
The short version
- A dongle plus your phone is cheaper, smaller and has a better screen than any handheld at the price. It is also useless if the phone is dead or the app is mid-update.
- A corded handheld needs no pairing and no account, and works in a parking garage with no signal.
- A tablet is a standalone computer with its own battery - the format professionals use, and the heaviest thing to keep charged.
- An adapter like the MX+ is only as capable as the app you pair it with, which is a strength if you know which app you want and a trap if you do not.
The format comparison in full is in bluetooth vs wired OBD2 scanners, and the bluetooth roundup covers the dongle field specifically.
What we would buy
BlueDriver Pro for a car with an ABS or airbag light and an owner who wants an answer rather than a project. Innova 5610 if you would rather have a dedicated handheld with free updates and live ABS data, and you are in the US or Canada. Autel MK808S if you intend to do brake work on a car with an electronic parking brake. OBDLink MX+ if you drive a Ford or a GM and already know which app you want to run. Check the coverage list for your exact vehicle before any of those becomes an order.