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🔧 Diagnose like a pro—never miss a signal or connection again!
The DUOYI OBD2 Breakout Box is a robust, multifunctional diagnostic tool designed for professional-grade vehicle troubleshooting. Featuring a full 16-pin OBDII interface with a 90cm cable, it provides safe, direct access to vehicle data lines. Integrated LED indicators deliver real-time feedback on power, ground, and communication signals, while universal 4mm banana sockets and male/female headers enable seamless connection to multimeters, oscilloscopes, and diagnostic tools. Ideal for millennial managers who demand precision and efficiency in automotive diagnostics.







| ASIN | B0B2C1145D |
| Best Sellers Rank | 504,054 in Automotive ( See Top 100 in Automotive ) 2,055 in OBD-II Engine System Diagnostic Tools |
| Brand | DUOYI |
| Brand Name | DUOYI |
| Customer Reviews | 4.7 out of 5 stars 89 Reviews |
| Item Weight | 0.38 Kilograms |
| Manufacturer | DUOYI |
| Manufacturer Part Number | QCZDCSY-2PCS |
| Model Number | QCZDCSY-2PCS |
| Operating System | Windows XP |
| Operating system | Windows XP |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Screen Size | 35 Inches |
| Screen size | 35 Inches |
| UPC | 661706277020 |
J**N
OBD2 Breakout box.
A well made product which can be used to connect the cars OBD2 socket when requiring to test externally without any damage to the host socket. It is colour coded with respective leds that illuminate when connected when testing which is a nice feature. It has a good length of cable that saves probing the cars OBD2 socket using four mm banana test leads when using a multimeter on the breakout.
S**N
Impressed
I was first impressed with the quality of the packaging. It was a strong box with good quality printing on it. The break out box itself seems sturdy with no bad manufacturing seams or misaligned sections. The cable seems like it will last. The only thing is that the printing on the box marking the position of the connection holes is too small and repeats the letters “OBD” before every number. If the letters were not there the numbers could be printed larger. I find myself counting to make sure I am using the correct hole. The test leads look like good quality metal that will retain its shape for a long time.
B**Y
Makes OBD2 diagnostics so much easier
Have had a lot of highspeed can bus issues lately on cars. (Been a tech for 23 years, specifically with electrical and computer diagnostics). Plugging this into the OBD2 port on a car gives me quick verification of battery power supplies at connector, grounds and CAN bus activity. The ability to tap into the banana connectors while a scan tool is plugged in also is fantastic for reading waveforms with an oscilloscope. Also checking overall CAN bus resistance unpowered using the banana plug taps makes diag much faster and more convenient than trying to GENTLY probe the OBD2 connector itself which sometimes are buried in the depths of a dashboard. Fantastic tool and well worth the money for quick preliminary and some more advanced testing.
D**.
Game changer for mechanics!
Game changer for doing in car diagnostics when you cant get voltage readings to be consistent. So fast, so easy, and really clear instructions on what to do! Its a must have for any shop who is serious about repairing cars
L**O
Muy buen producto
Práctico bueno para ir comenzando tus diagnostico
S**H
Check the c
That break out box works great for me.
Trustpilot
2 months ago
2 days ago