Unlocking the intricate secrets hidden within your car’s onboard computer system is now easier than ever with the advent of full system OBD2 scanners. These sophisticated devices go beyond basic error code reading, providing a comprehensive overview of your vehicle’s health. As a car owner, encountering a mysterious dashboard light or suspecting an underlying mechanical issue can be frustrating. Fortunately, the Best Full System Obd2 Scanners act as your personal automotive detectives, connecting directly to your car’s computer and granting you access to a wealth of diagnostic information, all without the hefty price tag of a professional mechanic.
However, navigating the world of OBD2 scanners can be overwhelming, especially for those new to automotive diagnostics. The market is flooded with options, each boasting different features and capabilities. That’s where our expert review comes in. At carparteu.com, we’ve rigorously tested a wide array of OBD2 scanners over the years, and we’re here to guide you to the top performers. We understand the nuances of automotive diagnostics and have identified the best full system OBD2 scanners that are truly worth your investment.
Whether you’re a seasoned DIY enthusiast or a car owner seeking to understand your vehicle better, this guide will illuminate the path to the ideal scanner for your needs. We’ll delve into the top picks, highlighting their strengths and weaknesses, and provide you with the knowledge to choose the best full system OBD2 scanner to empower your car maintenance journey.
Here are our top selections for the best full system OBD2 scanners available right now.
Tom Pritchard
Tom is the Tom’s Guide UK Phones Editor, covering everything from new hardware to the best mobile apps. He’s also an avid electric car enthusiast, and will argue to the death in their defense.
The Quick List: Top Full System OBD2 Scanners
For those in a hurry, here’s a snapshot of the best full system OBD2 scanners we recommend. Scroll down for detailed reviews and insights on each product.
Topdon TopScan: Best Mobile Full System Scanner1. Topdon TopScan: The Topdon TopScan redefines mobile diagnostics with its seamless Bluetooth connectivity and comprehensive full system scanning capabilities, packed into a compact design. It offers professional-grade features, including diagnostics, repair guidance, parts lists, and even predictive analysis to anticipate potential issues.
Launch CR529: Best Budget Full System Scanner2. Launch CR529: Priced around $40, the Launch CR529 is a standout budget-friendly option that doesn’t compromise on essential full system diagnostic features. It delivers impressive capabilities for its price, including lifetime support and updates, making it an exceptional value for money.
Topdon Phoenix Lite 2: Best Professional Full System Scanner3. Topdon Phoenix Lite 2: The Topdon Phoenix Lite 2 stands as a robust and professional-grade full system scanner, designed to bridge the gap between amateur and professional diagnostics. While a premium investment at $799, it offers an experience akin to professional diagnostic tools, with ruggedness for demanding environments.
Ancel BD310: Best Dual-Purpose Full System Scanner4. Ancel BD310: The Ancel BD310 offers a versatile dual functionality. Beyond its primary role as a full system OBD2 scanner, it can also enhance your car’s dashboard by displaying real-time engine specifications. Its elegant design, smartphone compatibility, and reasonable price make it a compelling choice.
Carly OBD-II Scanner: Best Full System Scanner with Companion App5. Carly OBD-II Scanner: The Carly OBD-II Scanner’s value is heavily dependent on your vehicle make, particularly excelling with VW, BMW, and Ford vehicles, unlocking the most comprehensive full system diagnostics. Its standout feature is its exceptional companion app, offering extensive customization and professional-level tests.
What Defines the Best Full System OBD2 Scanners?
Why Trust Our Recommendations? At carparteu.com, our team of experienced automotive content creators dedicate countless hours to hands-on testing and in-depth analysis of automotive products, services, and apps. Our goal is to provide you with reliable and trustworthy recommendations to make informed decisions. Learn more about our rigorous testing and review process. (Replace with actual link if available)
Best Mobile Full System OBD2 Scanner
(Image credit: Topdon)
1. Topdon TopScan
Perfect for Deep-Dive Full System Diagnostics
Our Expert Review:
Key Specifications
- Display/size: None (App-based)
- Bluetooth/Handheld: Yes/No
- Full System Diagnostics: Yes
- Live Data Stream: Yes
- Bi-directional Control: Select Systems
- Special Functions: Extensive (varies by make/model)
- Warranty: 2 years
- Size: 3.2 x 2.0 x 1.1 inches
- Weight: 2.6 ounces
Reasons to Buy
- Exceptional Full System Diagnostic Coverage: Delves into all vehicle systems for comprehensive analysis.
- Extensive Live Data Streaming: Monitors crucial parameters in real-time across all systems.
- Unique Performance Indicators: Assesses vehicle performance and efficiency beyond basic diagnostics.
- Maintenance Items Covered: Provides insights into routine maintenance needs across various systems.
Reasons to Avoid
- Larger Transmitter: The Bluetooth transmitter module is somewhat bulky.
- Subscription for Advanced Features: Some advanced functionalities require a subscription after the first year.
The Topdon TopScan may appear unassuming in its compact form, but it packs a powerful punch when it comes to full system diagnostics. This isn’t just a basic Bluetooth OBD2 module; it’s a sophisticated tool designed to provide in-depth access to your vehicle’s computer. We were impressed by its ability to go far beyond standard error code reading, offering full system scans that rival scanners in higher price brackets.
Beyond fault identification and I/M Readiness tests, the TopScan excels in performance and efficiency analysis. It can estimate horsepower and torque, offering a deeper understanding of your car’s overall health and performance across all systems. For enthusiasts seeking to fine-tune their vehicle or ensure comprehensive roadworthiness, the TopScan is an invaluable tool in your arsenal, providing full system insights at your fingertips.
Read our comprehensive Topdon TopScan Review
Best Budget Full System OBD2 Scanner
(Image credit: Future)
2. Launch CR529
Unbeatable Full System Diagnostics Under $50
Our Expert Review:
Key Specifications
- Display/size: Color/ 2.8-inches
- Bluetooth/Handheld: No/Yes
- Full System Diagnostics: Basic Systems
- Live Data Stream: Yes
- Bi-directional Control: No
- Special Functions: Basic OBD2 functions
- Warranty: 1 year
- Size: 6.5 x 3.8 x 1.2 inches
- Weight: 11 ounces
Reasons to Buy
- Extremely Affordable: Full system access at a remarkably low price point.
- Lifetime Updates: Ensures long-term compatibility and functionality for core OBD2 functions.
- Easy Pre-Inspection Report: Streamlines vehicle inspection readiness checks.
Reasons to Avoid
- Limited Full System Depth: May not access all modules or advanced functions in every system.
- Lacks Manufacturer-Specific Codes: Limited access to advanced manufacturer-specific diagnostics.
- Heavier Build: Feels somewhat weighty for its size.
- 1-Year Warranty: Shorter warranty period compared to some competitors.
In our assessment, the Launch CR529 emerges as the best value full system OBD2 scanner, defying expectations with its comprehensive features at a mere $38 price tag. We were genuinely surprised by the level of diagnostic capability it delivers for such a minimal investment. While it might not offer the deepest dive into every single system like higher-end scanners, it provides valuable full system access for the majority of users.
Compromises are inevitable at this price point. The CR529 lacks manufacturer-specific codes and has a slightly heavier feel. However, it compensates with essential full system features including live data display, instant inspection readiness checks, and a surprisingly detailed view into your car’s inner workings across major systems. The inclusion of lifetime updates is a significant bonus, ensuring continued usability without recurring subscription fees for basic OBD2 functions. While not ideal for professional-level diagnostics requiring in-depth full system analysis, the CR529 is an excellent choice for everyday car owners seeking affordable and reliable full system scanning capabilities.
Read our full Launch CR529 Review
Best Professional Full System OBD2 Scanner
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(Image credit: Future)
3. Topdon Phoenix Lite 2
Bridging the Gap Between Enthusiast and Professional Full System Diagnostics
Our Expert Review:
Key Specifications
- Display/size: Color/8-inch Touchscreen
- Bluetooth/Handheld: Yes/Yes (Wireless Module)
- Full System Diagnostics: Comprehensive
- Live Data Stream: Extensive, with Graphing
- Bi-directional Control: Full System
- Special Functions: Advanced, including coding & programming (make/model dependent)
- Warranty: 2 years
- Size: 10.2 x 7.2 x 1.7 inches
- Weight: 2.6 pounds
Reasons to Buy
- Near-Professional Grade Full System Scanner: Offers advanced diagnostics comparable to professional tools.
- Hybrid Handheld with Wireless Connectivity: Combines handheld convenience with wireless freedom via Wi-Fi and Bluetooth.
- Large 8-inch Touchscreen: Provides a user-friendly and detailed interface for full system navigation and data viewing.
- Extensive Diagnostic Tests & Live Data: Offers a vast array of tests and real-time data parameters across all vehicle systems.
- Includes Adapters & Hard Case: Comes with necessary adapters and a protective case for professional use.
Reasons to Avoid
- Bulky and Heavy: Larger and heavier than other scanners, potentially less portable.
- High Price Point: Significantly more expensive than entry-level and mid-range scanners.
- Subscription Required After 2 Years for Updates: Firmware updates require a paid subscription after the initial 2-year period.
The Topdon Phoenix Lite 2 commands a premium price, positioning it above many other capable OBD2 scanners. However, this investment unlocks a wealth of professional-grade full system diagnostic capabilities, making it an ideal choice for serious DIYers and professional mechanics alike. You get a tool that blurs the lines between amateur and professional automotive diagnostics, offering deep full system access.
A standout feature is its wireless operation. The control pad connects wirelessly via Bluetooth to a module plugged into your car’s OBD port, providing unparalleled freedom of movement around the vehicle during full system scans. While the scanner itself is substantial in size and weight, it features a kickstand and a ruggedized design, built to withstand the demands of a workshop environment. Beyond basic error codes, the Phoenix Lite 2 offers advanced features like live data graphing, in-depth fault information, and bi-directional controls across vehicle systems, functionalities typically found in professional-grade full system scan tools. Be mindful of the subscription requirement for updates after the initial two years, which adds to the long-term cost. For those seeking comprehensive full system diagnostic power and near-professional capabilities, the Topdon Phoenix Lite 2 is a top-tier contender.
Read our detailed Topdon Phoenix Lite 2 Review
Best Dual-Purpose Full System OBD2 Scanner
Ancel BD310 (Image credit: Tom’s Guide)
4. Ancel BD310
A Versatile Full System OBD2 Scanner with Dashboard Display Functionality
Our Expert Review:
Key Specifications
- Display/size: Color/2 inches
- Bluetooth/Handheld: Yes/Yes
- Full System Diagnostics: Basic Systems
- Live Data Stream: Yes
- Bi-directional Control: No
- Special Functions: Dashboard display mode
- Warranty: 3 years
- Size: 5.1 x 2.4 x 0.6 inches
- Weight: 5.4 ounces
Reasons to Buy
- Lightweight and Compact: Highly portable and easy to store in the glovebox.
- Dual Functionality: Operates as both a full system scanner and a secondary car display.
- Handheld and Bluetooth Scanning: Offers flexible connectivity options.
Reasons to Avoid
- Minimalist Interface: Interface design is very basic and may lack visual appeal.
- Small Screen: The 2-inch display can feel cramped for detailed data viewing.
The Ancel BD310 distinguishes itself with its dual-purpose design, functioning as a standard handheld full system OBD2 scanner and, when paired with a smartphone via Bluetooth, transforming into a secondary dashboard display. This unique feature sets it apart, offering added value beyond typical diagnostic functions. While its full system capabilities are more focused on essential systems rather than in-depth analysis, it covers core diagnostics effectively.
Its compact and lightweight design makes the BD310 exceptionally convenient to keep in your vehicle. The small size, however, translates to a 2-inch display, which can feel somewhat limited, and the four-button interface is basic but functional. Despite these minor drawbacks, the BD310 proves to be user-friendly for car diagnostics. The generous 56-inch cable allows for comfortable use while working under the hood, and it performs essential full system diagnostic actions like I/M readiness checks and displaying performance data including coolant temperature, engine timing, and RPM. For those seeking a portable full system OBD2 scanner with added dashboard display functionality, the Ancel BD310 is a practical and affordable option.
Explore our full Ancel BD310 Review.
Best Full System Scanner with Companion App
(Image credit: Carly)
5. Carly OBD-II Scanner
A Feature-Rich Full System Scanner, Vehicle Dependent
Our Expert Review:
Key Specifications
- Display/Size: None (App-based)
- Bluetooth/Handheld: Yes/No
- Full System Diagnostics: Extensive (VW, BMW, Ford), Limited (other makes)
- Live Data Stream: Yes
- Bi-directional Control: Select Systems (VW, BMW, Ford)
- Special Functions: Extensive customization, coding, service resets (VW, BMW, Ford)
- Warranty: Lifetime
- Size: 2.9 x 1.5 x 0.7 inches
- Weight: 0.7 ounces
Reasons to Buy
- User-Friendly App Interface: Boasts an exceptionally well-designed and intuitive companion app.
- Extensive Customization Options: Offers a high degree of personalization and feature adjustments within the app.
- Comprehensive Live Data Display: Provides real-time data monitoring across various vehicle systems.
- Maintenance and Repair Functions: Includes features to assist with vehicle maintenance and repairs, especially for supported makes.
- Lifetime Warranty and Updates: Offers long-term peace of mind with lifetime warranty and software updates.
Reasons to Avoid
- Vehicle Compatibility Dependent: Full system capabilities are significantly skewed towards VW, BMW, and Ford vehicles; limited functionality with other makes.
- Subscription Model: Full access to advanced features requires an ongoing subscription, adding to the overall cost.
The Carly OBD Scanner stands out for its exceptional companion app, which elevates the user experience far beyond many Bluetooth OBD2 scanners. While some Bluetooth scanners offer rudimentary apps, Carly provides one of the most feature-rich and user-friendly apps we’ve encountered. However, the “full system” effectiveness of the Carly scanner is heavily contingent on your vehicle make. It truly shines with VW, BMW, and Ford vehicles, unlocking deep full system diagnostics, coding, and customization options. For other makes, its full system capabilities are considerably more basic, focusing primarily on standard OBD2 functions.
Beyond basic error reading and diagnostics, the Carly app offers repair assistance, pre-purchase used car inspections, and extensive customization features – particularly for its target vehicle brands. The lifetime warranty is a rare and valuable offering. The key drawback is the vehicle-specific nature of its advanced full system features. To maximize the Carly scanner’s potential, ensure your vehicle is a VW, BMW, or Ford. Also, be aware that accessing the full suite of features beyond basic OBD2 functionality necessitates a recurring subscription. For owners of compatible vehicles seeking a powerful full system OBD2 scanner with an outstanding app experience, the Carly OBD-II Scanner is a compelling, albeit vehicle-dependent, choice.
Explore our in-depth Carly OBD scanner review
Other Full System OBD2 Scanners We’ve Tested
- Innova CarScan Mobile 1000 (★★★★☆): This Bluetooth OBD2 scanner stands out for its innovative predictive diagnostics features, mirroring the impressive capabilities of Innova’s handheld scanners but in a wireless, app-based format. Its exceptionally simple setup process further enhances its appeal as a Bluetooth-only full system diagnostic option. Read the full Innova CarScan Mobile 1000 review
- ThinkCar ThinkDiag TKD01 (★★★★☆): While larger than typical Bluetooth OBD2 scanners, the TKD01’s robust build makes it exceptionally durable. It offers a wide range of manufacturer-specific error codes and extended fault codes capable of resolving minor issues without mechanic intervention. However, a subscription fee of $40 is required after the first year. Read our full ThinkCar ThinkDiag TKD01 review.
- Autel AutoLink AL539 (★★★☆☆): Specifically designed for diagnosing electrical system problems, this OBD2 scanner features a built-in multimeter to identify issues like burnt cables, shorts, and blown fuses. It also provides extensive live data and pre-inspection readiness checks. Read our full Autel AutoLink AL539 review
Frequently Asked Questions About Full System OBD2 Scanners
What is a Full System OBD2 Scanner?
Mechanics utilize diagnostic scanners to pinpoint car problems by accessing information from the vehicle’s onboard computer via the OBD port. Full system OBD2 scanners go a step further than basic code readers. They can access and diagnose not just the engine and emissions systems, but also other modules like transmission, ABS, SRS, body control, and more, offering a holistic view of your car’s electronic health. These scanners read and interpret error codes flagged by the car’s computer and, in advanced models, monitor systems in real-time and even predict potential future issues across all accessible modules.
What is the OBD-II Port?
The On-Board Diagnostics Version Two (OBD-II) port is a standardized port found in almost all passenger vehicles sold in the U.S. since 1996, Canada since 1998, EU since 2004, and Australia, Mexico, and New Zealand since 2006. This port serves as the interface to the car’s onboard computer. Besides full system OBD2 scanners, it accommodates various devices like insurance black boxes and dash cams.
If you’re unsure of its location, here’s a guide to find your car’s OBD-II port in North American vehicles, and worldwide OBD-II/EOBD port locations.
What is a DTC in Full System Diagnostics?
DTC stands for Diagnostic Trouble Code, an error code generated by a car’s OBD system when it detects a problem within any of the monitored systems. Full system OBD2 scanners read these codes across all modules, enabling users to diagnose issues beyond the engine and emissions systems. While many DTCs are standardized across vehicle makes and models, some manufacturers use proprietary DTCs specific to their vehicles.
Understanding DTC Meanings for Full System Diagnosis
DTCs may appear cryptic, but they follow a logical structure, providing clues about the nature and location of the detected issue. The first letter indicates the affected system: Powertrain (P), Body (B), Chassis (C), or Network (N). The second character, a number, denotes whether it’s a generic code (0) or manufacturer-specific (1).
The third character pinpoints the specific subsystem involved:
- 1: Fuel and air metering
- 2: Injector circuit (fuel and air metering)
- 3: Ignition system or misfire
- 4: Auxiliary emissions
- 5: Vehicle speed controls and idle control systems
- 6: Computer auxiliary outputs
- 7, 8, 9: Transmission and gearbox faults
- A, B, C: Hybrid-specific propulsion faults
The fourth and fifth characters specify the exact fault, ranging from 0 to 99. Full system OBD2 scanners translate these codes into understandable descriptions, with advanced models offering more detailed information and potential repair guidance across all vehicle systems. Online resources like Google can further assist in deciphering DTCs. While over 5,000 DTCs exist, not all indicate critical problems; some may simply signal minor issues like slightly elevated engine temperature. Full system scanners help differentiate between critical and minor issues across the entire vehicle.
Choosing the Best Full System OBD2 Scanner for Your Needs
For comprehensive insights into your vehicle’s operation and potential problems across all systems, a full system OBD2 scanner is indispensable. It provides access to the same diagnostic information used by dealerships and repair shops, empowering you with knowledge and control over your car’s maintenance.
Full system OBD2 scanners come in two main types:
- Handheld Full System Scanners: Feature an integrated screen and OBD port cable.
- Wireless Full System Scanners: Connect to smartphones or tablets via Bluetooth for display and operation.
High-performance full system OBD2 scanners are available across various price points. Key factors to consider when choosing the best full system scanner include:
- Ease of Setup: A user-friendly setup ensures quick and efficient diagnostics.
- Comprehensive Faults and Explanations: The scanner should accurately identify faults and provide clear explanations across all vehicle systems.
- Full System I/M Readiness Check: Verifies emission system readiness and checks other system readiness for comprehensive inspections.
- Accuracy and Reliability: Accurate diagnostic results are crucial for effective troubleshooting across all modules.
- Portability (Size and Weight): Consider size and weight for convenient storage and on-the-go diagnostics.
- Full System Live Data: Real-time data streaming from all accessible modules aids in diagnosing intermittent issues.
- Data Visualization (Graphs): Graphical data representation enhances data analysis and comparison over time, system by system.
- Warranty and Updates: Opt for scanners with robust warranties and software updates to ensure long-term value and compatibility with evolving automotive technology.
The choice between handheld and wireless full system scanners depends on personal preference. Prioritize longevity with lifetime warranties or software updates. For handheld scanners, screen size and clarity are important. Rugged designs with shock absorption are beneficial for durability. Consider extra features like electrical multimeters, manufacturer-specific code access, and PDF report export capabilities, especially for professional-grade full system scanners. Full system OBD2 scanners offer exceptional value, often costing less than a single hour of professional mechanic labor, making them a worthwhile investment for proactive car maintenance and informed repairs.
How We Test Full System OBD2 Scanners
Our full system OBD2 scanner testing methodology involves real-world application and rigorous evaluation. We use a 2014 Audi A4 Allroad to test scanners in both garage and on-road scenarios over several weeks. Initial testing includes verifying Vehicle Identification Number (VIN) reporting upon connection to the OBD-II port.
For wireless full system scanners, we assess Bluetooth or Wi-Fi connectivity with devices like Apple iPads, Microsoft Surface tablets, and Samsung Galaxy smartphones. Handheld scanners are tested upon direct connection to the OBD-II port. We measure cable length for handheld units and wireless range for Bluetooth scanners. With the car running, we monitor engine and other vital system parameters using the scanner’s full system diagnostic capabilities. To simulate a fault, we disconnect the engine oil temperature sensor and observe the scanner’s fault detection and reporting accuracy across relevant systems.
We evaluate the detail of fault information provided, the ease of clearing fault codes, and the scanner’s ability to display real-time operating data like engine speed, timing, and coolant temperature across all systems. Data presentation in numerical, graphical, or gauge formats is assessed for user-friendliness. Our testing emphasizes the scanner’s ability to perform comprehensive full system diagnostics, providing users with a clear and accurate picture of their vehicle’s overall health.
Finally, we delve into understanding fault codes. All codes consist of four numbers and a letter prefix (P, B, C, or U). We analyze the scanner’s ability to interpret both generic (starting with 0) and manufacturer-specific (starting with 1) codes within the full system context. For example, a P0098 code (intake air temperature sensor issue) and a Ford-specific P1112 code (intermittent intake air temperature sensor readings) are used to evaluate the scanner’s code interpretation depth and accuracy across different levels of diagnostic information.
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