Best OBD2 Scanner for DIY: 6 Scan Tools from Code Reader to Bidirectional
Six OBD2 scanners for home mechanics, from a basic code reader to bidirectional scan tools, compared by systems covered, service resets, updates, display and warranty.
On this page
Top picks at a glance
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- 1
Best OverallBLCKTEC 460T9.6/10View on Amazon - 2
Best No-Subscription ValueTOPDON AD600S9.6/10View on Amazon - 3
Best BidirectionalAutel MaxiCheck MX808S9.6/10View on Amazon - 4
Best Basic Code ReaderANCEL AD4109.5/10View on Amazon - 5
Innova SD35 OBD2 ScannerView on Amazon - 6
Innova 1000 Bluetooth OBD2 Scanner for iPhone & AndroidView on Amazon - 7
Bluetooth OBD2 Scanner for iOS & AndroidView on Amazon - 8
Portable Bluetooth OBD2 Car Diagnostic ScannerView on Amazon
An OBD2 scanner tells you why a warning light is on before you pay a shop to look. Scanners range from simple code readers that cover the engine to tablet scan tools that read every module and run bidirectional tests. This guide compares six by the systems they cover, service resets, bidirectional ability, update terms, display and warranty.
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Quick picks
- Best Overall BLCKTEC 460T: Engine, transmission, ABS and SRS plus all-system scan, 12+ service resets and a 2 year limited warranty. Check price on Amazon
- Best No-Subscription Value TOPDON AD600S: Four systems, 9 service functions and free lifetime updates on a 5 in touchscreen. Check price on Amazon
- Best Bidirectional Autel MaxiCheck MX808S: 3,000+ active tests and 28+ service functions on Android 11 hardware, with a 1 year warranty. Check price on Amazon
- Best Basic Code Reader ANCEL AD410: Reads and clears engine codes with live data, O2 and EVAP tests and 42,000+ code definitions. Check price on Amazon
The picks
BLCKTEC 460T OBD2 Scanner Car Code Reader Engine
A handheld scan tool that reads engine, transmission, ABS and SRS codes, runs an all-system scan and offers 12+ service resets.
Pros
- Engine, transmission, ABS and SRS plus all-system diagnostics
- 12+ resets: oil, EPB, SAS, TPMS, battery, ABS bleed and more
- AutoVIN, AutoScan and four-stream live data graphing
- 2 year limited warranty
Cons
- No bidirectional active tests
- Update terms not stated
- Function list varies by vehicle
- Many features lean on its companion app
TOPDON AD600S OBD2 Scanner
A 5 in touchscreen scan tool for engine, ABS, transmission and SRS with 9 service functions and free lifetime software updates.
Pros
- Free lifetime updates via Wi-Fi, no subscription
- Engine, ABS, transmission and SRS
- 9 service functions incl. oil, EPB, BMS, SAS, TPMS, ABS bleed
- CAN-FD and FCA AutoAuth gateway support
Cons
- No bidirectional tests
- Extra services only as a 30 day trial
- Needs Wi-Fi for setup
- 1 year warranty
Autel Scanner MaxiCheck MX808S
A bidirectional Android tablet scan tool with full-system diagnostics, 3,000+ active tests and 28+ service functions.
Pros
- 3,000+ bidirectional active tests
- Full-system diagnostics with 28+ service functions
- Quad-core, 4 GB RAM Android 11 hardware
- FCA AutoAuth support for 2018+ Chrysler, Jeep, Dodge
Cons
- Most expensive here
- Update terms not stated on the listing
- Cars before 2000 need a compatibility check
- 1 year warranty
Innova 5610 OBD2 Bidirectional Scan Tool
A bidirectional handheld scan tool with ABS, SRS, transmission and engine live data, special resets and free updates without subscription.
Pros
- Bidirectional commands such as fuel pump and EPB
- ABS, SRS, transmission and engine live data
- Free updates, no subscription fees
- Pairs with the RepairSolutions2 app
Cons
- Coverage stated as 1996 to 2023 at listing time
- Not universal; check Innova's coverage tool
- No warranty term on the listing
- Fewer resets than tablet tools
OBDLink MX+ OBD2 Bluetooth Scanner for iPhone
A Bluetooth OBD2 adapter for iPhone, Android and Windows with enhanced OEM support for major brands and battery drain protection.
Pros
- Works with apps like FORScan, BimmerCode and Torque
- Enhanced OEM data for Ford, GM, Toyota, Honda and others
- Over-voltage and battery drain protection
- Firmware updates included
Cons
- Needs a phone, PC and the right app
- Features depend on the app you pair it with
- Warranty given only as a link
- No screen of its own
ANCEL AD410 Enhanced OBD2 Scanner
A handheld OBD2 code reader that reads and clears engine codes, shows live data and freeze frame, and runs O2 sensor and EVAP tests.
Pros
- Reads and clears check engine codes
- Live data, freeze frame and I/M readiness for smog checks
- O2 sensor and EVAP tests
- 42,000+ code definitions built in
Cons
- Engine and emissions only, no ABS or SRS
- No service resets
- Warranty field unclear
- Small display
More options to compare
Innova SD35 OBD2 ScannerCheck price on Amazon
Innova 1000 Bluetooth OBD2 Scanner for iPhone & AndroidCheck price on Amazon
Bluetooth OBD2 Scanner for iOS & AndroidCheck price on Amazon
Portable Bluetooth OBD2 Car Diagnostic ScannerCheck price on Amazon
Compare the picks
| Model | Shop Score | Type | Systems | Bidirectional | Service resets | Updates | Display | Warranty |
|---|---|---|---|---|---|---|---|---|
| BLCKTEC 460T | 9.6/10 | Handheld | Engine, trans, ABS, SRS, all-system scan | No | 12+ | Not stated | Color screen | 2 year limited |
| TOPDON AD600S | 9.6/10 | Tablet | Engine, ABS, trans, SRS | No | 9 (30 on a 30 day trial) | Free lifetime via Wi-Fi | 5 in touchscreen | 1 year |
| Autel MaxiCheck MX808S | 9.6/10 | Tablet | Full system | Yes, 3,000+ active tests | 28+ | Not stated | Android 11 tablet | 1 year |
| Innova 5610 | 9.5/10 | Handheld | Engine, ABS, SRS, trans live data | Yes | Special resets | Free, no subscription | Color screen | Not stated |
| OBDLink MX+ | 9.5/10 | Bluetooth adapter | Engine plus OEM ABS, SRS, TPMS data (by app) | Via app, vehicle dependent | Via app | Firmware updates included | Your phone or PC | Link to brand page only |
| ANCEL AD410 | 9.5/10 | Handheld | Engine (OBD2) | No | None | Not stated | Small screen | Unclear |
Functions are as stated on each listing, collected 5 October 2026. Coverage varies by vehicle year, make and model; check each brand’s coverage tool before buying.
How we scored them
Each scanner is scored out of 10 on performance, build, value, safety and warranty, with the weights published on our How We Pick page. Performance weighs systems covered, service functions and bidirectional tests; value weighs update terms. None of these listings states a safety listing for the tool, so all score zero there.
| Product | Shop Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| BLCKTEC 460T | 9.6 | 33 | 22 | 20 | 0 | 3 |
| TOPDON AD600S | 9.6 | 32 | 22 | 22 | 0 | 2 |
| Autel MaxiCheck MX808S | 9.6 | 34 | 22 | 18 | 0 | 2 |
| Innova 5610 | 9.5 | 33 | 22 | 19 | 0 | 0 |
| OBDLink MX+ | 9.5 | 29 | 22 | 20 | 0 | 1 |
| ANCEL AD410 | 9.5 | 26 | 20 | 24 | 0 | 1 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
What the listings tell you
We read 14 OBD2 scanner listings. Only 6 stated a clear warranty term; others gave a support note or a link. Update terms were the biggest difference: some promise free lifetime updates, some do not say, and app-based adapters depend on the app’s own pricing. Almost every listing warns that functions vary by vehicle.
Buying guide: an OBD2 scanner for home use
Code reader or scan tool
A code reader covers the engine and emissions: enough for a check engine light and smog readiness. A scan tool adds ABS, SRS (airbag), transmission and other modules, which you need for brake, airbag and battery work.
Service resets
Electronic parking brakes, battery registration, steering angle sensors and TPMS often need a scan tool after you do the job. Check that the tool lists the resets your car needs.
Bidirectional tests
Bidirectional tools send commands, turning on a fuel pump, fan or injector, so you can confirm a fault before buying parts. They cost more and are worth it for project cars and harder electrical faults.
Updates and coverage
New vehicles need new software. Prefer tools with free updates, and check the brand’s coverage tool with your VIN.
Handheld or adapter
Handhelds work on their own. Bluetooth adapters are cheap and powerful with the right app, but need your phone and sometimes a paid app.
Battery warning? Pair a scanner with a battery charger and maintainer.
Use rated jack stands on solid ground, wear eye protection with power and air tools, keep fuel-burning equipment out of a closed garage, and follow the manual for every tool. Read our Safety Disclaimer.
Frequently Asked Questions
What is the best OBD2 scanner for a beginner?
A simple code reader like the ANCEL AD410 if you only want to read the check engine light. If you do your own brakes or batteries, a scan tool with ABS, SRS and service resets saves a shop visit.
Do OBD2 scanners work on all cars?
Basic OBD2 functions work on most cars and light trucks sold in the US from 1996 on. Advanced functions vary by make, model and year, so check the brand’s coverage tool.
What does bidirectional mean on a scan tool?
The tool can send commands to the car, such as switching on a fuel pump or retracting an electronic parking brake, not just read data.
Will clearing a code fix the problem?
No. Clearing turns off the light, but the code returns if the fault is still there. Fix the cause, then clear the code and confirm it stays off.
Do scan tools need a subscription?
Some do, some do not. Two picks here state free updates with no subscription; others do not state update terms.
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