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  • Thinkdiag 2 automotive diagnostic device in black and red, shown with its OBD2 connector cable
  • THINKCAR ThinkDiag 2 OBD2 scanner key features including full system diagnostics, bi-directional control, ECU coding, 15 service resets, CAN FD and FCA protocol support
  • THINKCAR ThinkDiag 2 OBD2 scanner with 15 professional vehicle maintenance reset services for full automotive diagnostic repair
  • THINKCAR ThinkDiag 2 professional level full system diagnostics OBD2 scanner for vehicle comprehensive analysis
  • THINKCAR ThinkDiag vs ThinkDiag 2 comparison showing similarities and differences in protocol support, vehicle coverage and diagnostic performance
  • THINKCAR ThinkDiag 2 OBD2 scanner supports IMMO key programming
  • THINKDIAG 2 OBD2 scanner with an ECU module and vehicle diagram for ECU coding
  • THINKDIAG 2 scanner with bidirectional active test panels for window, wiper, and headlight
  • THINKDIAG 2 scanner and phone showing Auto VIN decode next to a sedan
  • Hand holding a THINKDIAG 2 scanner next to a 4-in-1 live data graph on the phone
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ThinkCar DIY

THINKCAR ThinkDiag 2
$129.00 USD
$129.00 USD
Sale Sold out

Free shipping · 2–7 business days

The THINKDIAG 2 upgrades smartphone-based vehicle diagnostics with CAN FD support, professional full-system diagnostics, bi-directional control, ECU coding, IMMO/key programming, and 15+ maintenance services in one compact Bluetooth scan tool. Designed for advanced DIY users, automotive technicians, and small repair shops, THINKDIAG 2 communicates with supported vehicle control modules to read and clear DTCs, analyze live data, command actuators, perform adaptations and coding, and complete common service procedures directly from a compatible smartphone. Compared with conventional code readers, THINKDIAG 2 reaches much deeper into the vehicle. Its built-in CAN FD communication capability expands access to newer vehicle platforms, while Bluetooth 5.0, AutoVIN, graphical live data, diagnostic reports, and broad vehicle coverage create a fast and flexible diagnostic workflow without requiring a dedicated scan tablet.

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5.0 from 8 reviews Read all
  • Amazing device

    “Great value, easy to install app works amazing. accurately installed transmission coding when i replaced my cvt trans...”

    markos holland
  • Worthy Investment

    “I purchased this item to erase the check engine light off my nissan xtrail after a part replacement. Worked like a ch...”

    Sinoy Peters
  • Fits-your-car guarantee Listed but won’t work on your car? Full refund, free return.
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  • 1-year seller warranty Defects handled by our own team.
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  • CAN FD Support for Newer Vehicle Platforms
  • Professional Full-System Diagnostics
  • Real-Time Bi-Directional Control & Active Tests
  • Advanced ECU Coding & Adaptation
  • IMMO Service & Key Programming
  • 15+ Professional Maintenance & Reset Functions
  • Complete 10-Mode OBD2 Diagnostics
  • AutoVIN for Faster Vehicle Identification
  • Graphical Live Data for Smarter Troubleshooting
  • Vehicle Health Reports for Better Repair Documentation
  • Bluetooth 5.0 Wireless Diagnostics
  • 120+ Vehicle Brand Coverage
  • Android & iOS Compatibility
  • 1-Year Free Software Updates

Learn more

What vehicles are compatible with THINKDIAG 2?

THINKDIAG 2 supports a wide range of OBD-II vehicles and provides diagnostics for multiple vehicle systems. Vehicle coverage and available functions depend on the vehicle make, model, year, and control modules. The built-in CAN FD protocol support also improves compatibility with newer vehicle platforms that use CAN FD communication.

Does THINKDIAG 2 support full-system diagnostics?

Yes. THINKDIAG 2 supports professional-level full-system diagnostics for various vehicle modules, including Engine, Transmission, ABS, SRS, EPB, TPMS, BCM, AWD, Battery, Parking Sensor, Cruise Control, Instrument Cluster, and more. It can read and clear DTCs, access vehicle information, view live data, and perform system troubleshooting.

Does THINKDIAG 2 support ECU Coding?

Yes. THINKDIAG 2 supports ECU Coding for selected vehicles and control modules. It allows technicians to adjust adaptive values and customize supported vehicle settings after component replacement or service.
Available ECU coding functions may include supported systems such as Power Window, Illuminated Entry, Warning Systems, Light Control, Sunroof, Air Conditioning, Display, Unit Conversion, Entry & Ignition, Seat Systems, and more.
Note: ECU Coding availability depends on the vehicle model, year, and specific control module. Not all vehicles support coding functions.

Can THINKDIAG 2 perform bidirectional control tests?

Yes. THINKDIAG 2 supports bidirectional control (active tests), allowing technicians to send commands directly to supported vehicle modules to test components without manually operating vehicle controls.
Supported tests include functions such as:
Radiator fan activation
Throttle control testing
Window operation
Mirror adjustment
Exterior light control
Horn activation
Door lock testing
Available active tests vary by vehicle.

Does THINKDIAG 2 support key programming and immobilizer functions?

Yes. THINKDIAG 2 provides IMMO-related functions for supported vehicles, including key learning, remote key pairing, and remote key addition. It can also access compatible key chip data for reading, recovering, and writing key information.
Note: Immobilizer and key programming functions depend on vehicle compatibility and may require additional security access.

What maintenance services can THINKDIAG 2 perform?

THINKDIAG 2 supports 15+ maintenance and service functions, including:
Adaptive Front Lighting (AFS)
ABS Bleeding
Battery Matching
Gearbox Relearn
Brake Reset
Suspension Reset
EGR Adaptation
Electronic Throttle Relearn
Immobilizer Reset
Injector Coding
Oil Maintenance Reset
Steering Angle Reset
Sunroof Reset
TPMS Reset
Air Level Calibration
Available service functions may vary depending on the vehicle.

Does THINKDIAG 2 support CAN FD protocol?

Yes. THINKDIAG 2 features built-in CAN FD protocol support for compatible vehicles. CAN FD enables faster ECU communication and supports larger data frames up to 64 bytes, improving diagnostic efficiency and communication performance on supported vehicle platforms.

Can THINKDIAG 2 generate vehicle health reports?

Yes. THINKDIAG 2 uses Auto VIN technology to quickly identify vehicle information, including VIN, model year, vehicle model, and engine type. After diagnosis, it can generate detailed vehicle health reports that can be saved, shared, and printed from a PC for repair records and troubleshooting.

How do I set up and use THINKDIAG 2?

Getting started is simple:
Download the ThinkDiag+ App from Google Play or the App Store.
Create an account and log in.
Activate your THINKDIAG 2 device using the serial number and activation password.
Download the required vehicle software.
Connect the scanner to your vehicle’s OBD-II port via Bluetooth and begin diagnostics.

Is THINKDIAG 2 suitable for DIY users or professional mechanics?

THINKDIAG 2 is designed for advanced DIY users, technicians, and small repair shops. With full-system diagnostics, bidirectional control, ECU coding, maintenance functions, CAN FD support, and smart reporting features, it provides professional diagnostic capabilities in a compact Bluetooth scan tool.
 View Product Details

Product details

  • 15+Service functions
  • 120+vehicle brands
  • IMMOService
  • 10OBD-II diagnostics

Features

Diagnostics

Diagnostics

Professional OE-Level Full-System Diagnostics with AutoVIN 

Diagnose the vehicle as a complete electronic network instead of checking only the engine! THINKDIAG 2 provides deep full-system access across Engine (ECM), Transmission (TCM), ABS, SRS (Airbag), EPB, TPMS, BCM, BMS, SAS, A/C, AWD, Battery, Parking Sensor, Cruise Control, Instrument Cluster, and more:

  • All-Module Fault Scanning & ECU Info: Read and clear DTCs, retrieve ECU information, monitor live data streams, and investigate faults across multiple control systems from one application.
  • Fast AutoVIN Identification: Automatically retrieves available vehicle information—including VIN, model year, vehicle model, and engine info—reducing repetitive manual entry and loading the correct diagnostic software faster.
  • Complete 10-Mode OBD2 Diagnostics: Supports all 10 OBD2 modes (Read & Clear DTCs, Freeze Frame, Live Data, O2 Sensor Test, EVAP Test, On-Board Monitor Test, Vehicle Information, DTC Lookup, MIL Reset, and I/M Readiness) to resolve check-engine warnings and verify emissions readiness.

4-in-1 Graphical Live Data & Printable Vehicle Health Reports 

Fault codes tell you where to look—live data shows what is actually happening under the hood:

  • 4-in-1 Merged Live Data View: Displays up to 4 live readings on a single screen (comparing engine speed, temperatures, sensor signals, and control values side by side) to reveal abnormal trends that a static fault code alone might miss.
  • Automatic Vehicle Health Reports: Automatically generates structured full-system diagnostic reports after a scan to document detected faults and overall vehicle condition.
  • Save, Email & Print from a PC: Reports can be saved, shared via email, and printed from a PC for customer communication, repair documentation, and before-and-after service comparisons.
Advanced Functions

Advanced Functions

Real-Time Bi-Directional Control & Active Tests — Pinpoint Faults Without Disassembly 

Move beyond passive diagnostics with real-time bi-directional control! THINKDIAG 2 sends commands directly to vehicle control modules to activate components and open or close valves without using the vehicle's physical switches:

  • Direct Actuator Commands: Actively test radiator fans, electronic throttle, fuel injectors, valves, power windows, mirrors, exterior lights, horn, door locks, and other available actuators from your phone.
  • Isolate Actuator vs. Wiring Faults: By commanding the component and observing its actual response, technicians can quickly determine whether a problem lies in the actuator itself, the wiring, or the control system.
  • Reduce Unnecessary Part Swaps: Pinpoint internal faults faster and verify component operation right after a repair before replacing expensive parts.

Advanced ECU Coding, Adaptation & Personalization 

Go deeper after component replacement or vehicle repair with ECU Coding and adaptation functions on supported vehicles:

  • Component Matching & Adaptive Values: Adjust adaptive values and perform component matching within compatible control modules so newly replaced parts work seamlessly.
  • Customize Vehicle Settings: Configure supported functions across power windows, illuminated entry, warning systems, lighting, sunroof, air conditioning, displays, unit conversion, entry/ignition functions, and seat systems.
  • Complete Complex Repairs: Allows technicians and advanced DIYers to finish electronic setups that require far more than simply clearing fault codes.

IMMO Service & Key Programming 

Extend your diagnostic capability into supported immobilizer (IMMO) and key service procedures after repair or key replacement:

  • Key Learning & Smart Key Pairing: Available functions include key learning, remote-key pairing, adding smart keys, resetting or relearning keys, and other compatible IMMO operations.
  • Key Data Reading & Programming: Works with compatible key data for related reading and programming workflows (Note: IMMO and key functions vary significantly by vehicle and may require manufacturer security authorization or additional access).

15+ Professional Maintenance & Reset Functions — Skip Costly Dealership Trips 

Complete common workshop service procedures, calibrations, and relearns directly from the ThinkDiag / ThinkDiag+ app with 15+ maintenance functions:

  • Routine Service & Brakes: Oil Maintenance/Lamp Reset, Brake (EPB) Reset, ABS Bleeding, Battery Matching (BMS), TPMS Reset, and Steering Angle (SAS) Reset.
  • Engine, Fuel & Drivetrain: Injector Coding, DPF Regeneration, Electronic Throttle (ETS) Relearn/Adaptation, EGR Adaptation, and Gearbox Matching/Relearn.
  • Lighting, Chassis, Security & Body: Immobilizer (IMMO) Reset, Adaptive Front Lighting (AFS) Matching, Suspension Matching / Air Level Calibration, and Sunroof Initialization.
Protocols & Access

Protocols & Access

Built-In CAN FD Protocol & 120+ Vehicle Brands Coverage 

Built for multi-brand diagnostics across major U.S., European, and Asian markets, THINKDIAG 2 upgrades over the 1st-generation ThinkDiag by combining standard OBD2 protocols with high-speed CAN FD:

  • Upgraded CAN FD Protocol Support: Communicates directly with modern CAN FD vehicle architectures for faster data exchange and expanded newer-model compatibility without extra adapters.
  • 120+ Global Vehicle Brands: Supports 120+ vehicle brands worldwide—covering both established and newer vehicle platforms in one portable interface.
  • Full OBD2 Standards Compliance: Supports CAN FD, ISO 15765-4 (CAN), SAE J1850 (VPW & PWM), ISO 9141-2, and ISO 14230-4 (KWP2000).
Hardware & Software

Hardware & Software

Upgraded Bluetooth 5.0 Hardware with 23" Extension Cable & TPU Protective Sleeve 

Connect to the vehicle without being tied to a dedicated diagnostic tablet! As the comprehensive upgrade to the original ThinkDiag, THINKDIAG 2 features major hardware enhancements built for the garage:

  • Bluetooth 5.0 BLE Dual-Mode (Upgraded from BT 4.2): Delivers faster, more stable wireless communication with compatible Android 5.0+ and iOS 9.0+ smartphones via the ThinkDiag / ThinkDiag+ app (optimized for phones; not recommended for tablets).
  • 23-Inch (0.65m) DB15-to-OBD2 Diagnostic Cable: Includes a flexible 23 in (0.65 m) OBD2 extension cable so you can easily connect to tight, recessed under-dash ports without bumping your knees while driving or testing.
  • Double-Sided Indicator Light & TPU Soft Rubber Sleeve: Built with a double-sided LED status light for easy visibility from any angle and an upgraded ABS+PC+TPU soft rubber sleeve for superior shock and drop protection.

Specifications

Specifications

Hardware

Model THINKDIAG 2

Product type Bluetooth OBD2 diagnostic adapter

Dimensions 4.8 × 2.7 × 1.1 in

Connector 16-pin OBD-II

Diagnostic cable 23 in

Operating voltage 9–18 V

Working power ≤2 W

Operating temperature 14°F to 122°F

Storage temperature −4°F to 140°F

System

OS requirement Android 5.0+ / iOS 9.0+ phones. Not recommended for tablets

Connectivity

Bluetooth 5.0 BLE dual-mode

Updates & Access

Updates & Access

1-Year Free Software Updates Included — All 120+ Brands Unlocked! 

Get full-featured diagnostic, coding, and active-test power right out of the box—a single repair pays for the tool itself! THINKDIAG 2 includes 1 full year of free software updates:

  • 12 Months of All-Access Updates: Keep your supported vehicle software, bi-directional tests, ECU coding, and 15+ maintenance functions current throughout the included 1-year update period.
  • Expanded Coverage & Improvements: Download regular updates in the app to expand available vehicle coverage, improve software compatibility, and access ongoing diagnostic enhancements.

Note: Available diagnostic systems, active tests, ECU coding, IMMO/key programming, AutoVIN, and maintenance functions vary by vehicle make, model, year, and control module. IMMO and key functions may require manufacturer security authorization or additional access. Always confirm compatibility for your specific vehicle before performing advanced operations. Designed for Android 5.0+ and iOS 9.0+ phones (not recommended for tablets).

In the Box

In the Box

  • Thinkdiag 2×1
  • OBD2 Cable×1
  • Manual×1
m
markos holland
Amazing device

Great value, easy to install app works amazing. accurately installed transmission coding when i replaced my cvt transmission.

markos holland review photo
M
Mark
Full bi-directional scan tool! Highly recommended

I’ve got a Thinktool Platinum S10 and wanted one of these as a quick grab and go scanner as well as a back up. I’m very impressed with what this little scanner can do. It has full bi-directional control and I was able to use it on a 2019 Kicks to do things like actuate the wipers. I’ve easily been able to use this for diagnostics in place of my S10 this past week as I’ve been wanting to see what it could do. This tool includes the first year of subscriptions and I believe the subs are $100 a year after the first year. That’s dirt cheap in the bi-directional scan tool world. This is also AUTOAUTH compatible for newer Chryslers. Fantastic tool and highly recommended for the DIY, backyard mechanic and professionals alike. I haven’t tried this with an Android device but it works great on my 5th iPad and iPhone 12 mini.

Mark review photo
M
MikeS
Worthy Investment

Very good item, delivery took a little while but the item is very good for the price it has.

MikeS review photo MikeS review photo
S
Sinoy Peters
Worthy Investment

I purchased this item to erase the check engine light off my nissan xtrail after a part replacement. Worked like a charm however this diagnostic tool has capabilities far beyond just the simple read/reset fault codes. Database has to be updated before use. It allows you to select and download from the wide variety of car brands available. Registration and signing into the app was simple. Navigating the app to locate the specific functions was difficult initially but once you play around with it, you'll be fine. Some instructions would assist greatly. The only issue I had with it was the fact that it couldn't automatically detect my vin. Had to manually input it. In conclusion, a great tool. Would recommend.

D
Danny A.
Great scanner. No complaints

If you’re a DIYer who wants to stop guessing which part to throw at a problem, or a tech who wants a powerful "pocket" size scanner. this is the one. I like my snap on but it’s nice having something for quicker diags that don’t really require the $5k scanners. It’s the first Bluetooth dongle I actually trust to give me the right data. I have no complaints.

w
waterworld
Great tool for a good price

Great tool, works on every car I have used it on. Reads all codes, clears all codes, and you can reset and test/actuate just about every function your cars computer controls. I also have a Blue Driver that only reads and clears codes, but it also tells you how common the issue(code) is on your vehicle, it also gives you the most common fixes and a link to Amazon for the needed part, which the Thinkdiag does not.

C
Chris_TX
Really good scanner, works perfectly with other software

Great scanner for use with other software, its performance goes far beyond what it already offers.

B
BobbyV86
Five Stars – Amazing Product & Even Better Customer Service

I recently picked up the ThinkDiag2 and I’m beyond impressed. The team behind this listing absolutely hooked me up — they answered every question I had, fast and in detail, and made sure I felt confident before I ordered. Customer service is truly top-notch.
As for the tool itself, it matches my expectations and then some. It’s quick, reliable, and does everything I need it to do in the shop. The build quality and performance are solid, and it’s already saved me time on diagnostics.
Overall, great product backed by even better support. Highly recommend!


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