Can an OBD2 Scanner Read ABS and Airbag Codes?

This lesson draws on CARB’s OBD II fact sheet, Innova’s and Autel’s product pages, Haynes on trouble codes, and the Kia and Ram owner’s manuals. How we research explains the method.

Why a basic reader can’t see ABS or airbag faults

OBD2 is an emissions rule first. The California Air Resources Board (CARB) says the system monitors “virtually every component that can affect emission performance,” and that the faults behind the check engine light either affect emissions or the OBD system’s own ability to work. Anti-lock brakes and airbags are safety systems with their own warning lights, so a reader limited to the generic standard can show no codes while the ABS or airbag light is on.

Scanner makers treat these systems as separate features. Innova’s comparison table lists “Check Engine”, “ABS Brake Codes” and “SRS Airbag Codes” as three rows, and its 5210 reads the first two but not the third.

Trouble codes start with a letter for the area of the car: Haynes lists P for powertrain, B for body, C for chassis and U for network. The digit after the letter says who defined the code: 0 for a standardized SAE code, 1 for a code specific to the carmaker.

What “4-system” and “ABS/SRS” mean on the box

SRS is the name for the airbag system in owner’s manuals such as Kia’s. A “4-system” scanner covers engine, transmission, ABS and SRS, the four systems Autel lists for its AutoLink AL629 handheld.

The catch is coverage, which is set per make, model and year:

Autel says the AL629 reads those systems on “most 1996 and newer major vehicle models”, and asks buyers to contact its sales support engineer for a detailed vehicle list.
Innova says not every feature of its 5610 is supported by every make, and points buyers to its Coverage Checker.

So the same scanner can read airbag codes on one car and not on the next. Enter your year, make and model in the maker’s checker before you buy. If a seller can’t confirm your car, assume the ABS and airbag functions won’t work on it.

What the warning lights tell you

The scanner tells you which code is stored; your owner’s manual tells you how urgent the light is. Wording varies by maker, so check your own manual too.

Airbag light: Kia’s 2026 Sorento manual says the light shows for about 3-6 seconds at start-up and otherwise appears when there is an SRS malfunction, and says to have the car inspected by an authorized Kia dealer.
ABS light alone: Kia says the normal brakes keep working when the ABS malfunctions, but the car still needs an inspection.
ABS light plus the brake fluid warning light: Kia says that when both are on, the brake system will not work normally. Avoid high speeds and abrupt braking, and have the car inspected as soon as possible.
Flashing check engine light: Ram’s manual says “If the MIL is flashing, severe catalytic converter damage and power loss will soon occur. Immediate service is required.” CARB likewise says a blinking light means a fault that could be damaging the catalytic converter.

A battery or charging light is a different warning: see signs your car battery is dying.

Read airbag codes, leave airbag work to a professional

With airbags, the scanner’s job is to tell you and the shop which code is stored. Read the code, write it down or photograph the screen, and take the car to a qualified technician. Leave clearing the code and every repair to them: an airbag fault is a safety repair, and clearing a code does not fix the part behind it.

Brakes work the same way. An ABS code helps you describe the fault, but the manual’s instruction for the warning lights comes first.

Engine codes are different: clearing them after a repair is routine. Clearing them right before an emissions test has a catch, covered in clearing codes before an emissions test.

Which scanner for which light

Check engine light only: any OBD2 reader will do. Whether to get a phone adapter or a handheld is the next lesson: Bluetooth OBD2 scanner vs wired.
Airbag light: a scanner that lists SRS for your exact car.
ABS light only: a scanner that lists ABS for your car is enough.

For airbag and ABS codes on a car sold in the US or Canada, Innova says its 5610 handheld scans the engine, ABS, SRS and transmission and runs bidirectional tests. Innova also says the 5610 works only in the United States and Canada, so check the market your car was built for.

Innova

Innova CarScan Pro 5610

A handheld bidirectional scan tool that reads engine, ABS, SRS (airbag) and transmission codes on select makes and models; not universal. Works only on vehicles in the US and Canada.

Key specs

Engine, ABS, SRS and transmission codes
Bidirectional tests
US and Canada vehicles only
Select makes and models; not universal

Premium

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If only the ABS light matters, Innova says the 5210 reads engine and ABS codes but not airbag codes, and adds a battery and charging system test. It too is limited to North American OBD protocols.

Innova

Innova 5210

A handheld code reader for engine and ABS codes with a battery and charging system test. It does not read SRS (airbag) codes and is built for North American vehicles and OBD protocols.

Key specs

Engine and ABS codes; no SRS (airbag)
Battery and charging system test
North American OBD protocols only

Mid-range

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Some phone adapters also claim ABS and airbag codes on certain makes. BlueDriver vs FIXD checks what those two list.

Sources

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