The Best Obd1 and Obd2 Scanner

If you own a vehicle from the early 1990s or a model that straddles the transition between onboard diagnostic systems, you already know the frustration of needing one tool for OBD1 and another for OBD2.

A dedicated OBD1 and OBD2 scanner saves you from juggling multiple devices, letting you pull codes, monitor live data, and clear check-engine lights across a wider range of cars and trucks.

Whether you are a weekend DIYer or a seasoned home mechanic, having a single scanner that covers both protocols simplifies troubleshooting and reduces clutter in your toolbox.

Our team at BestProducts has spent hours researching the market, analyzing specifications, cross-referencing expert review consensus, and studying verified buyer feedback to identify the most reliable OBD1 and OBD2 scanners available today.

Every model in this roundup has been scored using our proprietary BP Score system from 0 to 10, based on consistent criteria such as protocol coverage, live-data depth, ease of use, and build quality.

Below you will find the top picks that deliver real diagnostic value for both older and modern vehicles.

Best OBD1 and OBD2 Scanner Buying Guide

Compatibility with OBD1 and OBD2 Protocols

Not every scanner that claims OBD1 support works with every manufacturer’s proprietary protocol.

Some vehicles, especially General Motors models from the 1980s and early 1990s, use a 12-pin ALDL connector that requires an adapter like the Autel Original OBD1 to OBD2 GM Adapter Cable.

Others, such as certain Ford and Chrysler vehicles, use different OBD1 connectors. When evaluating a scanner, check whether it includes the necessary cables or adapters for your specific make and model.

Our research shows that the most versatile units offer either a built-in OBD1 connector or a bundled set of adapters, while others rely on aftermarket cables to fill the gap.

For pure OBD2 coverage, most modern scanners handle all five protocols (ISO 9141-2, KWP2000, J1850 VPW, J1850 PWM, and CAN).

However, if you plan to work on pre-1996 vehicles regularly, prioritize a model that explicitly lists OBD1 support and includes the correct adapters.

The Autel OBD1 to OBD2 adapter cable is a popular standalone solution that turns any standard OBD2 scanner into a GM-compatible OBD1 tool, but some all-in-one scanners like the Innova 5610 come with multiple connectors right in the box.

Live Data and Diagnostic Capabilities

Reading and clearing trouble codes is the bare minimum. A capable OBD1 and OBD2 scanner should also display live data streams such as engine RPM, coolant temperature, oxygen sensor readings, and fuel trim values.

This real-time information helps you pinpoint intermittent issues and verify repairs without guesswork. For advanced diagnostics, look for bidirectional control features that let you command components like fuel injectors, idle air control valves, or ABS solenoids directly from the tool.

Our guide to advanced OBD2 scanners highlights models that excel in this area.

Some scanners also offer manufacturer-specific enhanced data, such as Ford DLC or GM Mode 6 parameters. The OBDLink MX+, for example, provides deep access to proprietary PIDs through its companion app, while the Innova 5610 includes built-in repair tips and component evaluations.

If you frequently work on a particular brand, a scanner with enhanced coverage can save hours of research.

Ease of Use and Display

A scanner that is difficult to navigate will collect dust. Look for a clear, backlit display that is readable in bright sunlight or under the hood.

Color screens, like those found on the Innova 5610 and FOXWELL NT301, make it easier to distinguish live data graphs from numeric values.

Button layout should be intuitive, and menu logic should follow a logical path from protocol selection to code reading. For wireless models, the companion app’s interface matters just as much as the hardware.

The best iOS wireless OBD2 scanners offer clean, responsive apps that display data in customizable dashboards.

If you prefer a handheld tool without smartphone dependency, a standalone unit with a built-in screen is the way to go.

Models like the ANCEL AD410 combine a compact form factor with a straightforward button interface, making them ideal for quick diagnostics in a driveway or parking lot.

Build Quality and Connectivity

Durability matters when a scanner is tossed into a toolbox or used in a garage environment. Look for a rugged housing, strain-relieved cable connections, and a connector that fits snugly into the vehicle’s DLC port.

Bluetooth or Wi-Fi models should maintain a stable connection even when the phone is placed on the passenger seat. The best Bluetooth OBD2 scanners use low-energy chips that pair quickly and stay linked without frequent drops.

Wired scanners, like the FOXWELL NT301, offer a no-fuss connection that never suffers from interference, though the cable can be cumbersome in tight spaces.

For users who need to move between vehicles, a wireless scanner with a long battery life or a low-power sleep mode is convenient.

The OBDLink MX+ draws minimal power when idle and automatically reconnects to the last paired device, which is a small but appreciated detail.

Price and Value

OBD1 and OBD2 scanners range from budget-friendly code readers to professional-grade bidirectional tools. Entry-level models like the ANCEL AD310 can handle basic code reading and clearing for under $16.99, making them a low-risk entry point for occasional use.

Mid-range options such as the BlueDriver and FOXWELL NT301 add live data and enhanced diagnostics at a moderate premium. High-end units like the Innova 5610 command a higher price due to bidirectional controls, built-in repair databases, and OBD1 adapters.

Our roundup of the best OBD2 scanners under $100 covers several affordable picks that still offer good OBD2 performance, though OBD1 support may require a separate adapter.

When deciding, consider how often you will use the scanner and whether OBD1 compatibility is a must-have. If you only encounter older vehicles occasionally, a budget scanner plus a dedicated adapter cable may be the most cost-effective solution.

For regular professional or enthusiast use, investing in a higher-scoring model with comprehensive protocol support pays off in saved diagnostic time.

Why You Should Trust Us

BestProducts has been providing independent, research-backed product recommendations for years. We do not conduct our own product trials; our evaluations are grounded in research, published data, expert review consensus, and verified buyer feedback.

Each product in this guide was assessed against a consistent set of criteria including protocol coverage, live-data depth, ease of use, build quality, and overall value.

We then assigned each model a BP Score on a scale of 0 to 10, with 10 representing the best possible performance in its category.

Our editorial team operates independently of any manufacturer or retailer. We may earn a small commission if you purchase through our affiliate links, but this does not influence our scoring or the order of products.

Transparency is core to our mission: every recommendation is backed by thorough research, and we clearly disclose our methodology so you can make an informed decision.

Final Thoughts

After analyzing the top contenders, here are our standout picks for the best OBD1 and OBD2 scanners in 2026.

• Best Overall: OBDLink MX+, Its combination of broad protocol support, deep live-data capabilities, and reliable Bluetooth connectivity earned it the highest BP Score in this roundup. It works seamlessly with both iOS and Android apps, making it a versatile choice for DIYers and professionals alike.
• Best Budget Pick: ANCEL AD310, For under $16.99, this no-frills scanner delivers reliable OBD2 code reading and clearing. It is an excellent entry-level tool for drivers who primarily need check-engine light diagnostics on 1996-and-newer vehicles.
• Best for Professional Diagnostics: Innova 5610, With bidirectional controls, built-in repair tips, and OBD1 adapters included, this scanner is built for serious troubleshooting. Its high BP Score reflects its ability to handle complex repairs across multiple vehicle generations.
• Best OBD1 Adapter: Autel Original OBD1 to OBD2 GM Adapter Cable, If you already own a quality OBD2 scanner and need to access GM OBD1 vehicles, this adapter is a cost-effective solution. It scored well for its solid build and reliable connection.
• Best Wireless Experience: BlueDriver, This Bluetooth scanner pairs with a polished app that offers ABS, SRS, and TPMS data without a subscription. Its intuitive interface and consistent performance make it a favorite among mobile users.

Frequently Asked Questions

What is the difference between OBD1 and OBD2?

OBD1 (On-Board Diagnostics, first generation) was used primarily in vehicles manufactured before 1996. It varied widely between manufacturers, often requiring proprietary connectors and protocols.

OBD2 (second generation) was standardized in 1996 for all cars sold in the United States, featuring a universal 16-pin connector and common communication protocols. OBD2 provides more detailed diagnostic data, including standardized trouble codes and live sensor readings.

Can I use an OBD2 scanner on an OBD1 vehicle?

Not directly, because OBD1 vehicles use different connectors and communication protocols.

However, you can use an OBD2 scanner on an OBD1 vehicle with the appropriate adapter cable, such as the Autel OBD1 to OBD2 GM Adapter Cable for General Motors models.

Some all-in-one scanners like the Innova 5610 include multiple adapters to cover various OBD1 connectors. Always verify compatibility with your specific vehicle make and model before purchasing.

Do I need a separate adapter for OBD1?

It depends on the scanner. Some high-end models come with a set of OBD1 adapters in the box, while others require you to purchase an adapter separately.

If you plan to work on multiple OBD1 vehicles from different manufacturers, a scanner with bundled adapters is more convenient. For occasional use on a single GM vehicle, a standalone adapter like the Autel cable is a budget-friendly choice.

What features should I look for in a dual-protocol scanner?

Prioritize comprehensive protocol coverage (both OBD1 and OBD2), live data streaming, ease of use, and build quality. If you need advanced diagnostics, look for bidirectional controls and manufacturer-specific enhanced data.

For wireless convenience, choose a model with a stable Bluetooth connection and a well-designed companion app. Our guide to live OBD2 scanners provides additional insights into data-rich tools.

Are wireless scanners better than wired ones?

Wireless scanners offer greater freedom of movement and eliminate cable clutter, making them ideal for road evaluations or cramped engine bays. However, they rely on battery power and Bluetooth or Wi-Fi connectivity, which can sometimes drop or introduce latency.

Wired scanners are generally more reliable for continuous live data logging and never need charging. Your choice depends on whether you prioritize convenience or absolute connection stability.

Can an OBD1 and OBD2 scanner read ABS and airbag codes?

Not all models can. Basic code readers typically only access engine-related (powertrain) codes. To read ABS, SRS (airbag), and transmission codes, you need a scanner with multi-system support.

The BlueDriver and Innova 5610, for example, offer coverage beyond the engine control module. Check the product specifications to confirm which systems are supported. Our roundup of scanners for ABS, SRS, and transmission diagnostics can help you find a suitable model.

About the author