For the most common reader seeking the best OBD1 and OBD2 scanner, the INNOVA 3170RS OBD1 & OBD2 Scanner is the strongest fit because it combines OBD2 diagnostics with optional OBD1 connector support, ABS and SRS code coverage, live data, service functions, and a handheld design. Buyers focused only on newer OBD2 vehicles should consider the ANCEL AD410 Enhanced OBD2 Scanner for basic engine diagnostics, while owners of older Chrysler, Jeep, Dodge, or GM vehicles must confirm the connector type before buying an adapter or scanner.
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
- Supports iPhone, Android, and Windows devices
- Works with a range of named diagnostic applications
- Offers enhanced OEM support for several vehicle brands
- Includes protection against over-voltage and battery drain
Cons
- Vehicle compatibility and available features should be confirmed in the troubleshooting guide before purchase
Specifications
| Color | Black |
|---|---|
| Size | Small |
| Dimensions | 2.0078740137 x 0.9055118101 x 1.8110236202 Inches |
| Weight | 0.06172943336 pounds |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports iPhone, Android, and Windows devices
- Works with a range of named diagnostic applications
- Offers enhanced OEM support for several vehicle brands
Consider another option if
- Vehicle compatibility and available features should be confirmed in the troubleshooting guide before purchase
Pros
- Combines OBD1 and OBD2 scanning in one device
- Offers multiple diagnostic functions beyond basic check-engine code reading
- Includes RepairSolutions2 access for troubleshooting information, maintenance schedules, recalls, and parts information
- Supports compatible 1996 or newer OBD2 cars, light trucks, SUVs, and hybrid vehicles
Cons
- The listing does not identify the specific vehicle coverage for ABS, SRS, brake-pad, or hybrid functions
Best For / Avoid If
Best for buyers prioritizing
- Combines OBD1 and OBD2 scanning in one device
- Offers multiple diagnostic functions beyond basic check-engine code reading
- Includes RepairSolutions2 access for troubleshooting information, maintenance schedules, recalls, and parts information
Consider another option if
- The listing does not identify the specific vehicle coverage for ABS, SRS, brake-pad, or hybrid functions
Pros
- Supports diagnostics beyond basic engine code reading
- Offers live sensor data for additional diagnostic information
- Does not require a subscription for the stated RepairSolutions2 app features
- Handheld design is intended for home garages and professional shops
Cons
- Vehicle coverage and available features vary by make, model, and year
- OBD1 connectors are not included
Specifications
| Dimensions | 6 x 3.3 x 1 inches |
|---|---|
| Product Group | Automotive Parts and Accessories |
Best For / Avoid If
Best for buyers prioritizing
- Supports diagnostics beyond basic engine code reading
- Offers live sensor data for additional diagnostic information
- Does not require a subscription for the stated RepairSolutions2 app features
Consider another option if
- Vehicle coverage and available features vary by make, model, and year
- OBD1 connectors are not included
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
- 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 the listed GM OBD1 12-pin to OBD2 16-pin connection
- No driver installation is required
- Flexible PVC and metal construction is specified
Cons
- This product is a cable only and does not include a scanner or diagnostic tool
Specifications
| Color | Black |
|---|---|
| Dimensions | 16.9 x 1.84 x 0.64 inches |
| Product Group | Automotive Parts and Accessories |
| Binding | Automotive |
Best For / Avoid If
Best for buyers prioritizing
- Supports the listed GM OBD1 12-pin to OBD2 16-pin connection
- No driver installation is required
- Flexible PVC and metal construction is specified
Consider another option if
- This product is a cable only and does not include a scanner or diagnostic tool
Pros
- Supports connection between select Chrysler, Jeep, or Dodge 6-pin ports and 16-pin OBD2 scanners
- Does not require wiring or vehicle modification
- Includes corrosion-resistant pins and a PVC jacket
Cons
- Compatibility must be confirmed before purchase
- The package includes an adapter cable only, not a scanner or diagnostic tool
Specifications
| Color | Black |
|---|---|
| Dimensions | 4.8 x 1.8 x 1.4 inches |
| Product Group | Automotive Parts and Accessories |
Best For / Avoid If
Best for buyers prioritizing
- Supports connection between select Chrysler, Jeep, or Dodge 6-pin ports and 16-pin OBD2 scanners
- Does not require wiring or vehicle modification
- Includes corrosion-resistant pins and a PVC jacket
Consider another option if
- Compatibility must be confirmed before purchase
- The package includes an adapter cable only, not a scanner or diagnostic tool
Choosing an OBD1 and OBD2 Scanner
OBD1 and OBD2 are not simply two names for the same connector. OBD1 systems vary by manufacturer and model year, while OBD2 became the standardized diagnostic approach used on most US vehicles from the 1996 model year onward. A scanner that supports OBD2 cannot automatically communicate with every OBD1 vehicle, even if a physical adapter makes the connectors fit.
Start with the vehicle, not the feature list. Confirm the model year, engine, market, diagnostic connector, and the systems you want to access. Engine and emissions codes are widely supported by OBD2 readers, but ABS, SRS, transmission, TPMS, oil service, battery, and manufacturer-specific modules require explicit coverage. The product descriptions repeatedly warn that coverage can vary by vehicle, VIN, model year, or system.
Also distinguish a connector adapter from a scanner. The SWQS OBD1 to OBD2 Adapter for Chrysler 6pin and Hirificing OBD1 Scanner, OBD1 to OBD2 GM Adapter are cables only. They may connect an older vehicle to a compatible OBD2 scan tool, but they do not read or clear codes independently.
Best OBD1 and OBD2 Scanner Picks
Best broad OBD1 and OBD2 choice: INNOVA 3170RS OBD1 & OBD2 Scanner
The manufacturer lists the INNOVA 3170RS OBD1 & OBD2 Scanner as a handheld diagnostic tool for OBD2 vehicles, with separate OBD1 support described through its included or compatible vehicle connections. Its feature set is the broadest in this group: engine, ABS, SRS, transmission, brake pad life, oil system life, tire pressure, transmission temperature, live data, graphing, recording, playback, battery and alternator checks, hybrid battery cell voltage, and readiness information.
That breadth makes it the most logical choice for a household with multiple vehicles, especially when the vehicles span older and newer diagnostic systems. Its RepairSolutions2 integration is listed as providing repair information, maintenance schedules, recalls, suggested parts, and verified fixes. The scanner also supports English, Spanish, and French.
Drawback: At the listed price of $299.99, it is substantially more expensive than the basic engine readers, and its OBD1 capability still depends on the correct vehicle connector and coverage.
Avoid if: You only need to read an occasional check engine code on one OBD2 vehicle. A lower-cost engine scanner will cover that narrower need without paying for functions you may not use.
Best for phone-based enhanced diagnostics: BlueDriver OBD2 Scanner Bluetooth
The BlueDriver OBD2 Scanner Bluetooth is an OBD2 option for owners who prefer a phone or tablet interface. The manufacturer lists support for gas-powered vehicles from 1996 onward in North America, along with enhanced diagnostics for selected engine, ABS, SRS, TPMS, and transmission systems. It also lists live data, freeze-frame information, smog readiness, Mode 6 information, VIN-matched repair reports, and code clearing.
This is a strong fit for a DIY owner who wants definitions and repair context alongside diagnostic codes rather than a basic code number on a small handheld screen. Bluetooth reduces cable clutter, and the manufacturer lists no subscription fee, free app updates, and support for many major brands, including GM, Ford, Stellantis, Toyota, Honda, Nissan, Subaru, Hyundai, Mercedes-Benz, BMW, and Volkswagen.
Drawback: It is OBD2-focused and does not establish coverage for OBD1 vehicles. Its enhanced system access is also vehicle-dependent, so the listed brand support should not be treated as universal coverage for every module.
Avoid if: Your main requirement is diagnosing an OBD1 vehicle or using a dedicated screen without a phone or tablet.
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Best for Ford, GM, and app compatibility: OBDLink MX+ OBD2 Scanner for iPhone
The OBDLink MX+ OBD2 Scanner for iPhone connects with iPhone, Android, and Windows devices. The manufacturer lists enhanced OEM support for Ford, GM, Mazda, Nissan and Infiniti, Toyota, Lexus, Scion, Honda, Hyundai, and Kia. It is also listed as compatible with applications such as FORScan, Torque, BimmerCode, DashCommand, AlfaOBD, and Carista.
This makes it attractive to a technically inclined owner who wants to choose diagnostic software instead of being locked into one app. The adapter is also listed with over-voltage protection, battery drain protection, and included firmware updates. Those protections are useful ownership considerations for a device that may remain connected during diagnostics, although they do not guarantee that every vehicle or app feature will work.
Drawback: It does not provide documented OBD1 coverage in the published information, and the manufacturer directs buyers to confirm vehicle compatibility and features before purchase.
Avoid if: You want a self-contained scanner with no app setup, or you need confirmed OBD1 support.
Best affordable advanced OBD2 handheld: Innova 5410 All-System OBD2 Scanner Diagnostic
The Innova 5410 All-System OBD2 Scanner Diagnostic is aimed at drivers who want more than engine code reading but do not need the OBD1 focus of the 3170RS. The manufacturer lists engine, ABS, SRS, transmission, and other system diagnostics, plus live RPM, fuel trims, temperature, oxygen sensor, and battery voltage information. It is also listed as compatible with a Bluetooth connection to the RepairSolutions2 app.
The handheld format is useful when you do not want to rely on a phone during a repair. The product description says it works with most 1996 and newer vehicles, but also states that it is not universal and recommends using the manufacturer’s coverage checker. Optional OBD1 coverage is mentioned, with separate OBD1 connectors not included.
Drawback: OBD1 support requires separate connectors, and coverage for the listed systems varies by vehicle.
Avoid if: You need a complete OBD1 package in the box or want guaranteed access to ABS, SRS, or transmission modules on a particular vehicle.
Best value for engine codes and battery information: Innova 5210 OBD2 Scanner & Engine Code Reader
The Innova 5210 OBD2 Scanner & Engine Code Reader combines engine code functions with battery and alternator information. The manufacturer lists live RPM, engine temperature, fuel trims, oxygen sensor readings, oil light reset, and emissions readiness information. It also includes access to RepairSolutions2 guidance without an added subscription.
Its feature mix suits a driver maintaining one or more newer vehicles who wants more information than a simple check engine reader provides. The product description says it works with most US, Asian, and European vehicles from 1996 onward, while repeatedly directing buyers to the coverage checker. The listed instructions also explain that readiness monitors can reset after battery disconnection or code clearing and need a complete drive cycle to repopulate.
Drawback: OBD1 support is not listed, and ABS coverage may vary, so it is not a substitute for the 3170RS when older vehicles or broad system access are central requirements.
Avoid if: You are buying specifically for OBD1 diagnostics or need confirmed SRS, transmission, or full all-system coverage.
Best simple OBD2 reader with live data: ANCEL AD410 Enhanced OBD2 Scanner
The ANCEL AD410 Enhanced OBD2 Scanner is a practical choice for engine and emissions work. The manufacturer lists code reading and clearing, built-in code definitions, live data, freeze-frame information, readiness status, oxygen sensor information, EVAP information, vehicle information, and MIL status. It uses a 16-pin connector and draws power from the vehicle, with no battery, charger, Bluetooth connection, or app required.
The product description lists support for most 1996 and newer US OBD2 vehicles and many 2000 and newer European and Asian vehicles. It also lists support for major OBD2 protocols, including CAN, ISO9141, KWP2000, J1850 VPW, and J1850 PWM. That makes it a sensible low-complexity choice for a driver who mainly wants to understand a check engine light and check readiness before an emissions inspection.
Drawback: The manufacturer explicitly excludes ABS, SRS, transmission, bidirectional controls, and service reset functions.
Avoid if: Your vehicle has an airbag or ABS warning, or you need OBD1 communication.
Best low-cost basic reader: MOTOPOWER MP69033 Car OBD2 Scanner Code Reader
The MOTOPOWER MP69033 Car OBD2 Scanner Code Reader covers core OBD2 functions such as reading and clearing engine codes, freeze-frame information, readiness status, vehicle information, data flow, and selected live values. The manufacturer lists a built-in code library, nine OBD2 protocols, a 2.8-inch display, a 2.5-foot cable, and power from the vehicle’s diagnostic connector.
Its low purchase price and no-app operation make it suitable as an emergency glovebox reader or an inexpensive tool for basic engine diagnostics. The language options include English, German, Dutch, Spanish, French, and Italian.
Drawback: ABS, airbag, oil service, and other non-OBD2 systems are not supported.
Avoid if: You need OBD1, chassis-module access, service resets, or diagnosis beyond the engine and emissions system.
Best for live-data graphing: FOXWELL NT301 OBD2 Scanner Live Data
The FOXWELL NT301 OBD2 Scanner Live Data provides a cable-connected approach with a 2.8-inch color screen. The manufacturer lists live-data graphing and logging for oxygen sensors, fuel trims, coolant temperature, and RPM, along with code reading and clearing, VIN retrieval, readiness information, EVAP information, and oxygen sensor information.
It is intended for most 1996 and newer US gasoline vehicles, many 2000 and newer European and Asian vehicles, and certain 12-volt diesel vehicles equipped with OBD2. The built-in readiness indicators and dedicated readiness controls may help an owner check emissions status before visiting an inspection station.
Drawback: The manufacturer states that ABS, SRS, EPB, air conditioning, battery systems, bidirectional controls, calibrations, and advanced resets are not supported.
Avoid if: Your goal is OBD1 coverage or full-system diagnostics rather than engine live data.
OBD1 adapter for Chrysler, Jeep, and Dodge: SWQS OBD1 to OBD2 Adapter for Chrysler 6pin
The SWQS OBD1 to OBD2 Adapter for Chrysler 6pin is relevant only as a connector accessory. The manufacturer lists compatibility with Chrysler, Jeep, and Dodge vehicles using a six-pin diagnostic port, connecting that port to a standard 16-pin OBD2 scanner. It requires no wiring or splicing.
Drawback: It is only a cable, not a scanner or diagnostic tool.
Avoid if: Your vehicle does not have the specified Chrysler-family six-pin connector, or you do not already own a compatible scanner.
OBD1 adapter for GM vehicles: Hirificing OBD1 Scanner, OBD1 to OBD2 GM Adapter
The Hirificing OBD1 Scanner, OBD1 to OBD2 GM Adapter is another accessory rather than a code reader. The manufacturer lists a 12-pin GM OBD1 connection to an OBD2 16-pin tool, with a plug-in design and no driver requirement. Its purpose is to connect an existing scanner to a compatible older GM vehicle.
Drawback: The manufacturer clearly states that this item is a cable, not a scanner or diagnostic tool.
Avoid if: You need a complete diagnostic kit, or your GM vehicle uses a different connector or communication arrangement.
Compatibility and ownership tradeoffs
For OBD2 engine work, a basic reader can be enough to retrieve a diagnostic trouble code, view freeze-frame information, and check readiness. Clearing a code does not repair the underlying fault. The FOXWELL description specifically explains that a code can return if the problem is not corrected, and the Innova 5210 description notes that clearing codes or disconnecting the battery resets readiness monitors.
Full-system coverage costs more because it requires manufacturer-specific communication and software support. ABS and SRS access is especially important if those warning lamps are illuminated, but a scanner’s general brand compatibility does not prove that every module is supported. Check the manufacturer’s vehicle coverage tool using the exact year, make, model, engine, and VIN where required.
Adapters add another ownership step. A physical 6-pin, 12-pin, or 16-pin connection does not guarantee electrical or software compatibility. Use the adapter only with a scanner and vehicle combination that the scanner maker confirms. Do not force a connector, and do not assume an adapter can convert every OBD1 protocol into standard OBD2 diagnostics.
Who should skip this list
Do not buy anything here if you need dealer-level programming, immobilizer work, key registration, bidirectional actuator control, module coding, or guaranteed coverage for a particular proprietary system. The published descriptions do not establish those capabilities. Look instead for a scan tool whose manufacturer documents the exact function for your vehicle, or consult a qualified repair professional when programming, airbag systems, braking systems, or high-voltage hybrid components are involved.
Next step: Best OBD2 Scanner on Amazon for DIY Car Diagnostics, Best Bluetooth OBD2 Scanner and OBD2 Scanner Buying Guide for Beginners.
Final verdict
The INNOVA 3170RS OBD1 & OBD2 Scanner is the best match for the primary keyword because it is the only listed option centered on both OBD1 and broad OBD2 diagnostics, although connector and vehicle coverage still need confirmation. For OBD2-only ownership, BlueDriver offers phone-based repair information and enhanced system access, while the ANCEL AD410 keeps engine diagnostics simple and inexpensive. The Innova 5410 and 5210 sit between those choices, offering broader or more specialized OBD2 functions. Choose the Chrysler or GM adapter only when you already have a compatible OBD2 scanner and have verified the older vehicle’s connector.
