$800 Shop-Tablet Diagnostics on Your Phone for.
Stop driving to the auto parts store or paying $165 dealership hookup fees.
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Engineered with native high-speed CAN-FD architecture, tactile rubberized side grips, and zero forced monthly paywalls to scan.
Transfers diagnostic telemetry up to 5x faster than legacy Bluetooth dongles and unlocks 2020–2026 GM, Ford, and Chrysler models alongside 1996–2026 OBD2 vehicles.
Goes far beyond basic Check Engine lights to pull and clear factory fault codes in Transmission, ABS, SRS Airbag, BCM, TPMS, and HVAC modules.
Send active commands straight from your phone screen to cycle fuel pumps, cooling fans, throttle bodies, lights, and solenoids—eliminating guesswork.
Perform your own Oil resets, Electronic Parking Brake (EPB) pad swaps, ABS bleeding, BMS battery registration, SAS steering calibration, and DPF regens.
No crawling on dirty floor mats or jamming a tiny cordless dongle out of reach. The flexible top-mounted black cable and high-visibility red 16-pin connector click effortlessly into any OBD2 port while the ribbed matte-black body rests comfortably in your hand.
Turn the ignition on and watch the three circular status LEDs on the red-trimmed faceplate illuminate—confirming Power, Vehicle ECU link, and Bluetooth 5.0 telemetry as the app automatically detects your car's VIN, year, and model.
Run a full-system OEM health report, overlay up to 4 live sensor graphs (fuel trim, O2 voltage, coolant temp, misfires), actuate relays bi-directionally, and clear warning lights before storing the unit neatly in its EVA zipper case.
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CAN-FD All-System Bi-Directional OBD2 Diagnostic Scanner & 15-Service Reset Tool
Backed by our 30-Day Money-Back Trial & Full Cosari Guarantee.
$39.99 $79.99 Free Tracked Shipping (5–7 Days) Included
In Stock: Delivers in 5–7 Business Days. Free insured US delivery with tracking.
30-Day Money-Back Guarantee plus a full 2-Year Warranty.
Quantity
Full-System & Bi-Directional Capabilities: Reads and clears OEM codes across ECM, TCM, ABS, SRS, BCM, TPMS, and EPB modules. Performs active bi-directional actuation tests on relays, injectors, radiator fans, fuel pumps, windows, and valves, plus 4-in-1 live PID graphing.
Supported Protocols & Vehicle Compatibility: Supports high-speed CAN-FD (ISO 11898-1:2015), CAN, KWP2000, ISO9141, and J1850 VPW/PWM across 120+ global automakers (1996–2026). Pairs via Bluetooth 5.0 with iOS (iPhone/iPad) and Android devices.
Shipping, Guarantee & 2-Year Warranty: Ships with free tracked delivery inside a protective EVA hard-shell zippered case. Covered by our 30-Day Money-Back Driveway Trial and a 2-Year Hardware Warranty.
Free 5–7 Day US Shipping: Every order ships free with full tracking and delivers in 5 to 7 business days.
30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.
2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.
Unlike stubby cordless plugs that wedge flush inside dark dashboard brackets, our heavy-duty top cable and ribbed handheld body unplug in one second.
Catch intermittent highway misfires, lazy O2 sensors, and vacuum leaks in real time by merging 4 live PID waveforms on one screen.
No $69/year bait-and-switch paywalls just to read an ABS code. Includes 1 full year of all-software updates and all 15 resets out of the box.
Cosari ThinkDiag 2Standard Competitors
| Feature | Cosari ThinkDiag 2 | Standard Competitors |
|---|---|---|
| Two-Way Bi-Directional Active Testing | Included (Command Fans, Pumps & Relays) | Read-Only (Or Requires $350+ Shop Tool) |
| All-System OEM Scan (ABS, Airbag, Trans, BCM) | Included Across 120+ Car Brands | Engine Only (Or $69.99/yr Paywall) |
| 2020–2026 High-Speed CAN-FD Protocol | Native CAN-FD + 1996–2026 OBD2 | Legacy Slow Protocols Only |
| 15 Maintenance Resets (EPB, Oil, ABS, BMS) | All 15 Service Resets Included | 0 to 2 Basic Resets |
| Under-Dash Plug & Unplug Ergonomics | Ribbed Handheld + Tethered Red 16-Pin Cable | Stubby Plug Gets Jammed Under Dash |
Swipe left for steps 2 and 3
Connect the tethered red 16-pin plug into your vehicle's under-dash OBD2 port and turn the ignition key to ON. The unit's front Power LED lights up immediately.
Open the app on your iPhone or Android. Bluetooth 5.0 connects automatically, illuminates the front Vehicle LED, and identifies your exact make, model, and year.
View plain-English OEM fault codes across all modules, graph live sensor streams, run bi-directional tests or 15 service resets, and turn off the warning light.
This one is way better than the scanner that grew legs from my garage. It’s a great gadget to have and has worked well for me. If I can’t fix what it diagnoses, at least I know what I’m in for at the mechanic. The zippered case keeps the cable and dongle together.
My son’s car developed an issue without warning, so we plugged this into the OBD2 port. The mobile app found the system fault quickly, we replaced the part ourselves, and he was on his way home. Good product at a great price.
Working super good and easy enough for everyone. You can have diagnostics right in your own garage, which is very convenient. The three front lights for Power, Vehicle, and I/O make it obvious when everything is connected properly.
Excellent product 👌🏾 with correct connection readouts. It’s just what I needed to tell me what’s going on with my older 2006 Hyundai Sonata GLS. The tethered cable’s red 16-pin connector plugged right in under the dash without fumbling around the tight port.
My check engine light comes on occasionally, and I used to drive to the local auto parts store just to learn why. Now I can pull up the full system codes right on my phone at home. Saved me a trip and it’s well priced.
Bought this for my grandchildren to read engine codes. It connects to their phone through Bluetooth, but the rugged body, ribbed grips, and heavy tethered cable are much easier to grab and unplug than those tiny flush dongles that get stuck under the dash. Instructions were clear too.
Upgraded from a cheap ELM327 and keep this in the glovebox inside its EVA zipper pouch. It handles about 95% of what I use a $1,000 shop tablet for, including bi-directional actuation tests and 15 maintenance resets. Very portable for what it can do.
The ThinkDiag 2 does everything I need, including extended live data on the Ford, GM, Toyota, and Subaru vehicles in our family. CAN-FD support was important for our newer car, and having one year of free software updates included adds good value.
Used this after replacing the rear brake pads at home. The brake pad reset was easy to find in the app and completed without a shop visit. There are 15 maintenance functions shown, including oil reset, ABS bleeding, and DPF service. Handy DIY tool.
The bi-directional controls are the main reason I bought it. I’ve commanded the radiator fan and fuel pump directly from my phone instead of guessing whether they work. It also supports window and actuator tests plus ECU coding where the vehicle allows it.
$39.99 $79.99 Free Tracked Shipping (5–7 Days) Included
In Stock – Free 5–7 Day US Shipping · 30-Day Risk-Free Trial.
Yes. It supports over 120 US, Asian, and European vehicle brands manufactured from 1996 to 2026—from older daily drivers like a 2006 Hyundai Sonata GLS or Honda Civic up to 2020–2026 GM, Ford, and Chrysler trucks using high-speed CAN-FD protocols.
Yes. The scanner pairs automatically via built-in Bluetooth 5.0 with the official diagnostic app on both Apple iPhones/iPads and Android smartphones/tablets.
It scans and clears fault codes across all available OEM vehicle modules, including Engine (ECM), Transmission (TCM), Anti-Lock Brakes (ABS), Airbag (SRS), Body Control (BCM), TPMS, Steering Angle, and A/C systems.
You get Oil Light Reset, Electronic Parking Brake (EPB) Brake Pad Reset, ABS Bleeding, Battery Management System (BMS) Registration, Steering Angle Sensor (SAS) Calibration, DPF Regeneration, Injector Coding, Throttle Adaptation, TPMS Reset, Gear Learning, Gearbox Matching, Suspension Reset, Sunroof Initialization, AFS Headlamp Reset, and EGR Adaptation.
No. Your purchase includes 1 full year of unrestricted all-manufacturer OEM software updates, bi-directional tests, and all 15 resets at $0 extra cost, and standard OBD2 engine diagnostics work anytime without a subscription.
Every order is backed by our 30-Day Driveway Diagnostic Guarantee and a 2-Year Hardware Replacement Warranty. Plug it into your cars for a full month; if it doesn't save you time and mechanic fees, return it for a full refund.