Autel AL329 OBD2 Code Reader
- OBD II vehicles 1996 and newer, CAN supported
- One-Click I/M Readiness with LED and tones
- Auto VIN on vehicles before 2017
- Engine codes only: generic and manufacturer P and U codes
- Live data graph, record and playback
- 0.342 lb, 4.76" x 2.69" x 0.71"
- Lifetime free online update via PC
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A simple corded engine code reader for checking a check engine light and emissions readiness before an inspection. It reads engine codes only, with no ABS, airbag or service resets.
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ASIN: B0BHNRPZXRModel: AL329Category: Code Readers & Scan Tools
Overview
Checking emissions readiness before a state inspection takes one button on this Autel reader. Plug it into the diagnostic port, read and clear engine codes, turn off the warning light and watch the colored lights for pass status.
Owners get a fast, no setup way to see why the check engine light is on and whether the car is ready for an emissions test. It stops at engine and emissions data, and the VIN lookup only works on older models.
Who it's for
Drivers facing a state inspection or a sudden warning light will get quick answers. DIYers doing brake or airbag work need a full system scanner.
Pros and cons
- One-button readiness check
- Color LEDs and tones
- Live data graphing
- No battery or app needed
- Engine and emissions codes only
- Auto VIN limited to older vehicles
- Updates need a computer
Performance notes
It draws power and data from the diagnostic port, so it works the moment it is plugged in. The readiness check reads each emissions monitor and flags whether the car would pass. Code definitions rely on the built in library, which updates through a computer.
Specifications
| Brand | Autel |
|---|---|
| Model | AL329 |
| Dimensions & fit | |
| Item weight | 0.342 lb |
| Item Dimensions L x W x H | 4.76" x 2.69" x 0.71" |
| Capacity & performance | |
| Operating temperature | 0 to 60C (32 to 140F) |
| Warranty & support | |
| Supported protocols | CAN and OBD II |
| Other details | |
| Native Resolution | 220x176 |
| Language | English |
| Vehicle coverage | OBD II compliant vehicles 1996 and newer; some 1994-1995 |
| Software updates | Lifetime free online update via Mac or Windows |
| Systems covered | Engine, emissions |
| Additional features | One-Click I/M Readiness, Auto VIN (before 2017), freeze frame, live data graph |
Frequently asked questions
Will Auto VIN work on a newer car with the Autel AL329?
No. The listing says Auto VIN is only for OBD II vehicles before 2017. Code reading still works on OBD II vehicles.
Can it read ABS or airbag codes?
No such systems are listed. It reads generic and manufacturer specific engine codes and emissions readiness.
Does it need batteries or an app?
No app is needed; it is plug-and-scan through the vehicle port.
How do I update it?
Through a Mac-based or Windows-based computer with lifetime free online updates.