For most drivers, the Innova 5210 OBD2 Scanner & Engine Code Reader is the strongest pick under $100 because it combines engine diagnostics, live data, battery and alternator checks, oil reset capability, and a repair guidance app. If you only need to read a check engine code, the VDIAGTOOL VD10 offers the essential functions for much less, while the BlueDriver OBD2 Scanner Bluetooth is the better choice for phone-based enhanced diagnostics and verified repair reports.
Pros
- Provides diagnostics for four major vehicle systems
- Includes useful functions such as live data and I/M readiness
- Supports automatic VIN retrieval and manual vehicle selection
- Lifetime updates and a protective case are included
Cons
- Does not support oil reset, battery registration, ABS bleeding, throttle body relearn, or ABS relearn
- SRS crash or collision data cannot be cleared
- Vehicle compatibility varies by make, model, and year, and AUTOVIN may not work on some older vehicles or brands
Specifications
| Color | red |
|---|---|
| Dimensions | 7.68 x 3.54 x 1.18 inches |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Provides diagnostics for four major vehicle systems
- Includes useful functions such as live data and I/M readiness
- Supports automatic VIN retrieval and manual vehicle selection
Consider another option if
- Does not support oil reset, battery registration, ABS bleeding, throttle body relearn, or ABS relearn
- SRS crash or collision data cannot be cleared
- Vehicle compatibility varies by make, model, and year, and AUTOVIN may not work on some older vehicles or brands
Pros
- Offers more system coverage than basic engine-code readers
- Includes repair reports with definitions, possible causes, and confirmed fixes
- Wireless design connects to the vehicle's OBDII port without a cable to the phone or tablet
- Supports a broad range of listed vehicle makes, including GM, Ford, Toyota, Honda, BMW, and VW
Cons
- The published compatibility information covers gas-powered vehicles only
- A compatible phone or tablet is required for wireless use
Specifications
| Size | Pro-S |
|---|---|
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Offers more system coverage than basic engine-code readers
- Includes repair reports with definitions, possible causes, and confirmed fixes
- Wireless design connects to the vehicle's OBDII port without a cable to the phone or tablet
Consider another option if
- The published compatibility information covers gas-powered vehicles only
- A compatible phone or tablet is required for wireless use
Pros
- Includes code reading, code clearing, live data, freeze-frame, I/M readiness, and vehicle information functions
- Supports VIN, Calibration ID, and Calibration Verification Number retrieval
- Lists compatibility with post-1996 US-based, post-2006 EU-based, and post-2009 Asian-based OBDII vehicles
- Offers a built-in DTC definition database and support for six languages
- Includes a stated five-year warranty
Cons
- The display is described as a two-line LCD screen, which may provide less viewing space than larger scan-tool displays
Specifications
| Color | Blue |
|---|---|
| Dimensions | 9.79921258843 x 6.692913379 x 1.57874015587 inches |
| Product Group | Automotive Parts and Accessories |
| Binding | Unknown Binding |
Best For / Avoid If
Best for buyers prioritizing
- Includes code reading, code clearing, live data, freeze-frame, I/M readiness, and vehicle information functions
- Supports VIN, Calibration ID, and Calibration Verification Number retrieval
- Lists compatibility with post-1996 US-based, post-2006 EU-based, and post-2009 Asian-based OBDII vehicles
Consider another option if
- The display is described as a two-line LCD screen, which may provide less viewing space than larger scan-tool displays
Pros
- Combines an OBD2 scanner and battery tester in one tool
- Provides live engine data and emissions-readiness status
- Includes oil reset functionality and access to RepairSolutions2 repair guidance
- Vehicle coverage includes many US, Asian, and European models from 1996 and newer
Cons
- ABS and other diagnostic features may vary by make, model, and year
- Compatibility should be verified with Innova's Coverage Checker before purchase
- Emission-readiness monitors reset after a battery disconnect or code clear and require a complete drive cycle to repopulate
Specifications
| Dimensions | 5.99 x 2.99 x 0.99 inches |
|---|---|
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Combines an OBD2 scanner and battery tester in one tool
- Provides live engine data and emissions-readiness status
- Includes oil reset functionality and access to RepairSolutions2 repair guidance
Consider another option if
- ABS and other diagnostic features may vary by make, model, and year
- Compatibility should be verified with Innova's Coverage Checker before purchase
- Emission-readiness monitors reset after a battery disconnect or code clear and require a complete drive cycle to repopulate
Pros
- Supports both iOS and Android through Bluetooth LE
- Provides several standard OBD-II diagnostic functions
- Compatible with multiple generic and vehicle-specific third-party apps
- Compact listed dimensions of 1.61417 x 1.9685 x 0.86614 inches
Cons
- Requires a compatible third-party app, and some apps or features may require separate purchases
- Does not support special functions such as injector coding, EPB reset, ABS bleeding, oil light or service resets, and relearns
- Advanced diagnostics and EV or hybrid support depend on the vehicle and app
Specifications
| Dimensions | 1.61417 x 1.9685 x 0.86614 inches |
|---|---|
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports both iOS and Android through Bluetooth LE
- Provides several standard OBD-II diagnostic functions
- Compatible with multiple generic and vehicle-specific third-party apps
Consider another option if
- Requires a compatible third-party app, and some apps or features may require separate purchases
- Does not support special functions such as injector coding, EPB reset, ABS bleeding, oil light or service resets, and relearns
- Advanced diagnostics and EV or hybrid support depend on the vehicle and app
Pros
- Supports multiple common OBDII protocols, including CAN
- Provides more than basic code reading with live data, freeze-frame, and readiness information
- Powered through the vehicle, so no separate battery or charger is required
- Compact design and 12-ounce weight support portability
Cons
- Limited to emission-related diagnostics
- Requires a vehicle with an OBDII interface and does not diagnose OBDI vehicles, even with an adapter
- Vehicle compatibility should be confirmed before purchase
Specifications
| Color | Black |
|---|---|
| Dimensions | 4.9212598375 x 2.755905509 x 0.8661417314 inches |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports multiple common OBDII protocols, including CAN
- Provides more than basic code reading with live data, freeze-frame, and readiness information
- Powered through the vehicle, so no separate battery or charger is required
Consider another option if
- Limited to emission-related diagnostics
- Requires a vehicle with an OBDII interface and does not diagnose OBDI vehicles, even with an adapter
- Vehicle compatibility should be confirmed before purchase
Pros
- Broad basic OBD2 diagnostic function set
- Built-in code definitions can help explain fault codes
- Supports major protocols including CAN, ISO9141, KWP2000, J1850 VPW and J1850 PWM
- Color display, multilingual support and on-screen code definitions
Cons
- Limited to engine and emission-related codes
- Does not support ABS, SRS, transmission, bidirectional control or service reset functions
- Vehicle compatibility should be checked before purchase
Specifications
| Color | yellow |
|---|---|
| Dimensions | 9 x 6.3 x 1.6 inches |
| Weight | 0.66 Pounds |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Broad basic OBD2 diagnostic function set
- Built-in code definitions can help explain fault codes
- Supports major protocols including CAN, ISO9141, KWP2000, J1850 VPW and J1850 PWM
Consider another option if
- Limited to engine and emission-related codes
- Does not support ABS, SRS, transmission, bidirectional control or service reset functions
- Vehicle compatibility should be checked before purchase
Pros
- Supports check-engine code reading and clearing
- Provides live data features including engine speed, vehicle speed, coolant temperature, and calculated load value
- Includes a 2.5-foot cable and six-button control layout
- Compact 6.02 x 2.75 x 0.91-inch design
Cons
- Does not support ABS, airbag, oil service light, or other non-OBDII systems
- Vehicle compatibility is described as supporting most applicable vehicles rather than every vehicle
- Requires connection to a vehicle’s OBDII port for power
Specifications
| Color | Yellow |
|---|---|
| Size | Portable |
| Dimensions | 6.02 x 2.75 x 0.91 inches |
| Weight | 0.6375 Pounds |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports check-engine code reading and clearing
- Provides live data features including engine speed, vehicle speed, coolant temperature, and calculated load value
- Includes a 2.5-foot cable and six-button control layout
Consider another option if
- Does not support ABS, airbag, oil service light, or other non-OBDII systems
- Vehicle compatibility is described as supporting most applicable vehicles rather than every vehicle
- Requires connection to a vehicle’s OBDII port for power
Pros
- Includes live-data graphing and logging for supported OBD2 vehicles
- Offers emissions-readiness, O-2 sensor, and EVAP monitoring functions
- Supports common OBD2 protocols and many 1996-plus US gasoline vehicles
- Does not require a separate charging setup
Cons
- Does not scan ABS, SRS, EPB, A/C, battery, or other non-engine systems
- Compatibility and available functions vary by vehicle year, make, model, and VIN
Specifications
| Color | NT301 OBD2 Scanner |
|---|---|
| Size | NT301 Code Reader |
| Dimensions | 8.66 x 3.15 x 6.69 inches |
| Weight | 0.3527396192 Pounds |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Includes live-data graphing and logging for supported OBD2 vehicles
- Offers emissions-readiness, O-2 sensor, and EVAP monitoring functions
- Supports common OBD2 protocols and many 1996-plus US gasoline vehicles
Consider another option if
- Does not scan ABS, SRS, EPB, A/C, battery, or other non-engine systems
- Compatibility and available functions vary by vehicle year, make, model, and VIN
Pros
- Supports multiple diagnostic functions beyond basic code reading
- No batteries are needed for operation
- Offers seven language options, including English, French, and Spanish
- Designed with a plug-and-play interface for end users and DIYers
Cons
- The listing does not identify all seven supported languages
Specifications
| Color | OBD2 Scanner |
|---|---|
| Size | AL319 |
| Dimensions | 4.61 x 2.83 x 0.71 inches |
| Weight | 0.39021820374 Pounds |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports multiple diagnostic functions beyond basic code reading
- No batteries are needed for operation
- Offers seven language options, including English, French, and Spanish
Consider another option if
- The listing does not identify all seven supported languages
Best OBD2 Scanners Under $100
Prices are observations and can change, so confirm the current price before buying. The recommendations below are based on the listed functions, compatibility information, connection method, and documented limitations. The FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS is not included as an under-$100 pick because its listed price is $144.99, above this article’s price ceiling.
CarTechTalk may earn a commission from qualifying purchases made through links in this article. That does not change the product criteria or the limitations described here.
Best overall for broader DIY diagnostics: Innova 5210 OBD2 Scanner & Engine Code Reader
The Innova 5210 is the most balanced option for a driver who wants more than a basic check engine code reader. The manufacturer lists engine and, where coverage applies, ABS code reading, live data, battery testing, alternator health checks, oil reset, and I/M readiness information. It also works with the RepairSolutions2 app, which the manufacturer says provides verified fixes, suggested parts, and cost estimates without a subscription.
This combination matters because a code reader and a battery checker solve different ownership problems. A driver preparing for an emissions inspection can review readiness status, while someone investigating starting or charging concerns can check battery and alternator information from the same device. The manufacturer cautions that ABS coverage varies by vehicle, so the coverage checker should be consulted before purchase.
Drawback: Functions vary by make, model, and year, especially ABS coverage. Avoid if: you want confirmed access to every vehicle control module or a tool with guaranteed manufacturer-specific functions for your particular car.
Best phone-based option: BlueDriver OBD2 Scanner Bluetooth
BlueDriver is aimed at drivers who prefer a phone or tablet interface instead of a dedicated handheld screen. Its manufacturer-listed functions include enhanced diagnostics for check engine, ABS, SRS, airbag, TPMS, and transmission systems, along with live data, freeze frames, I/M readiness, Mode 6 information, and VIN-matched repair reports. The listed price is $94.95, and the manufacturer says the purchase includes app updates without a subscription.
Compatibility is broad for gas-powered vehicles made in 1996 or newer and sold in North America, but enhanced coverage still depends on the specific make and model. The wireless design also changes the ownership experience. You must have a compatible phone or tablet available, keep the app installed, and use the vehicle’s OBDII port with the Bluetooth adapter.
Drawback: It depends on a phone or tablet and enhanced functions remain vehicle dependent. Avoid if: you want a self-contained scanner that works without an app or mobile device.
Best budget choice for essential functions: VDIAGTOOL VD10 OBD2 Scanner Code Reader Car
At the low end of the listed prices, the VDIAGTOOL VD10 covers the core needs of many DIY owners. The manufacturer lists code reading and clearing, live data, freeze-frame information, I/M readiness, vehicle information, and a built-in database with more than 3,000 code definitions. It supports the common OBDII protocols listed in the product information and draws power from the vehicle, so there is no separate battery or charger.
The VD10 is a sensible purchase for someone who wants to identify an engine or emissions fault before deciding whether to visit a repair shop. Its VIN and vehicle information functions can also be useful when checking a used car’s stored information, although a code reader cannot establish the vehicle’s complete mechanical condition.
Drawback: The manufacturer describes it as an engine and OBDII diagnostic tool, not a scanner for ABS, SRS, or other advanced modules. Avoid if: your main reason for buying is airbag, transmission, or body-control diagnostics.
Best low-cost Bluetooth adapter: Veepeak OBDCheck BLE Bluetooth OBD II Scanner
The Veepeak OBDCheck BLE is a compact wireless adapter for drivers who already have a preferred diagnostic app. The manufacturer lists generic code reading and clearing, freeze-frame data, I/M readiness, and live sensor data. It supports Bluetooth Low Energy on iOS and Android, and the product information names compatible apps such as Car Scanner ELM OBD2, Torque for Android, OBD Fusion, BimmerCode, BimmerLink, OBD JScan, and Dr. Prius, subject to each app’s own limitations.
This approach can be economical, but the adapter is only part of the system. App compatibility, optional purchases, and vehicle-specific coverage determine what you can actually access. The manufacturer specifically says standard use does not include ABS, SRS, oil light or service resets, and advanced functions are available only for some vehicles through specific apps.
Drawback: It requires a compatible third-party app, and some app features may cost extra. Avoid if: you want one included interface with predictable functions and no app setup.
Best simple handheld with broad code lookup: ANCEL AD410 Enhanced OBD2 Scanner
The ANCEL AD410 is a dedicated handheld reader for drivers who want engine and emissions information without Bluetooth. Its listed functions include reading and clearing codes, live data, freeze frame, I/M readiness, vehicle information, EVAP information, and an O2 sensor test function. The manufacturer also lists more than 42,000 built-in DTC lookups, a color display, multilingual support, and free software updates.
The scanner draws power from the OBD2 port, which keeps setup straightforward. Compatibility is described as most 1996 and newer US-based OBD2 vehicles, along with many 2000 and newer European and Asian vehicles. That description is not a promise of identical coverage across every vehicle, so checking compatibility remains worthwhile.
Drawback: It reads engine and emission-related codes only and does not support ABS, SRS, transmission, bidirectional control, or service resets. Avoid if: you need an all-system tool rather than a check engine reader.
Best for live-data graphs: FOXWELL NT301 OBD2 Scanner Live Data
The FOXWELL NT301 focuses on engine and emissions diagnostics while adding graphing for available live sensor data. The manufacturer lists code reading and clearing, VIN retrieval, I/M readiness, EVAP information, O2 sensor information, and graph views for items such as oxygen sensors, fuel trims, coolant temperature, and RPM. Its 2.8-inch color display and direct OBD2 connection make it a useful choice for someone who wants to observe data rather than only read a stored code.
The NT301 is intended for compatible 1996 and newer US gasoline vehicles, many 2000 and newer European and Asian vehicles, and certain 12-volt diesel vehicles equipped with OBD2. Those vehicle and function qualifications matter. It is not an ABS, SRS, battery, air-conditioning, or advanced service tool.
Drawback: The manufacturer explicitly excludes ABS, SRS, EPB, air-conditioning, battery diagnostics, bidirectional control, and advanced resets. Avoid if: you are buying it for a warning light outside the engine and emissions systems.
Best basic travel reader: ANCEL AD310 Classic Enhanced Universal OBD II
The ANCEL AD310 is a straightforward corded reader for checking emission-related engine codes. Its listed functions include reading and clearing codes, live data, freeze frame, I/M readiness, vehicle information, and code lookup. It supports the OBDII protocols named by the manufacturer and receives power directly from the vehicle’s diagnostic connector.
This makes the AD310 suitable as a simple backup tool for a household or vehicle. The manufacturer states that it supports 1996 US-based vehicles, 2000 European vehicles, and many Asian vehicles, but also clarifies that it only supports emission-related issues and cannot diagnose an OBDI vehicle, even with an adapter.
Drawback: It is limited to emission-related diagnostics and the OBDII interface. Avoid if: your vehicle uses an older OBDI connector or you need ABS, airbag, transmission, or service functions.
Best large-screen low-cost reader: MOTOPOWER MP69033 Car OBD2 Scanner Code Reader
The MOTOPOWER MP69033 offers a broad set of generic OBDII functions at a low listed price. The manufacturer includes code reading and clearing, freeze frame, I/M readiness, vehicle information, live data, real-time curves, vehicle speed, calculated load, coolant temperature, and engine speed. It uses a 2.8-inch display, a wired connection, and vehicle-listed power.
Its support for the listed OBDII protocols and multiple languages may appeal to owners who want a basic reader that does not rely on a phone. The product information is clear that the unit handles check engine information only and does not support ABS, airbag, or oil service lights.
Drawback: ABS, airbag, and oil service systems are not supported. Avoid if: the warning light you need to investigate is not the check engine light.
Best low-cost branded alternative: Autel AL319 Professional OBD2 Scanner
The Autel AL319 is another compact handheld option for generic OBDII work. Its listed features include reading and clearing diagnostic trouble codes, code lookup, live data, freeze frame, I/M readiness, and vehicle information. The manufacturer also lists a one-click I/M readiness function, a color display, a built-in speaker, multiple languages, and power from the OBDII connector.
This reader fits drivers who want a simple interface and do not want Bluetooth, a subscription, or a separate charging routine. Compatibility is described for various post-1996 OBDII vehicles, but as with every scanner here, the vehicle’s exact model year and system support should be confirmed before purchase.
Drawback: The listed functions focus on generic OBDII and check engine information rather than advanced module diagnostics. Avoid if: you need confirmed access to ABS, SRS, transmission, or maintenance reset functions.
What to Look For in an OBD2 Scanner Under $100
Start with the warning light and control module
A generic OBD2 reader is mainly designed for engine and emissions-related information. It may read a check engine light while being unable to access an airbag, ABS, TPMS, or transmission module. BlueDriver and the Innova 5210 list broader coverage, but both still require vehicle-specific confirmation. A scanner that cannot communicate with the affected module will not solve the problem simply because it uses a 16-pin connector.
Choose wired or phone-based operation
Handheld readers such as the VD10, AD410, AD310, NT301, MP69033, and AL319 receive power from the vehicle and provide their own interface. Bluetooth products reduce cable clutter but add phone, app, and operating-system requirements. Veepeak is the most app-dependent option, while BlueDriver includes its own phone-based ecosystem and states that no subscription is required.
Understand what clearing a code does
Clearing a diagnostic trouble code does not repair the underlying fault. The manufacturer information for several products explains that a warning light can return if the cause remains. Code clearing can also reset emissions readiness monitors, which may require a complete drive cycle before an inspection. Read the code, record freeze-frame information, address the cause, and then verify the result.
Do not treat a code as a diagnosis
A diagnostic trouble code identifies a monitored condition or circuit, not necessarily the failed part. Live data, freeze-frame information, wiring inspection, voltage checks, and service information may still be necessary. For airbag, braking, fuel, or high-voltage vehicle concerns, follow the vehicle manufacturer’s service procedures and seek qualified professional help when the repair exceeds your training or equipment.
Which OBD2 Scanner Should You Buy?
Choose the Innova 5210 if you want the broadest mix of everyday functions under the price limit, including battery information, oil reset, live data, and app-based repair guidance. Select BlueDriver if your priority is wireless access to enhanced systems and VIN-matched repair reports. The VDIAGTOOL VD10 is the economical choice for basic engine code work, while the Veepeak OBDCheck BLE makes sense for app users who understand that advanced coverage depends on the app and vehicle.
Buy the ANCEL AD410 or FOXWELL NT301 for more detailed engine data on a dedicated screen. The ANCEL AD310, MOTOPOWER MP69033, and Autel AL319 are better suited to straightforward generic OBDII needs. No reader in this price range should be selected without checking the exact vehicle coverage, especially if the goal is ABS, SRS, transmission, TPMS, or service-reset access.
Readers seeking bidirectional controls, comprehensive manufacturer-level diagnostics, programming, or guaranteed coverage for specialized systems should not buy anything in this guide without first confirming those requirements. Look instead for a professional scan tool that explicitly lists the needed make, model, year, module coverage, and service functions.
If you are still comparing options, see Automotive Multimeter Buying Guide, Best Bidirectional OBD2 Scanner and Best OBD2 Scanner for Mercedes.
