OBD II 16 Pin Splitter Extension Cable 1x Male to 2x Female - Pack

In this review the bbfly 16 pin OBD II splitter is judged primarily as a practical, low-cost accessory for anyone who needs to add a second OBD-2 device without repeatedly unplugging the main scanner. It passes all 16 pins straight through and uses no shared ground wires, so the single biggest reason to buy is reliable straight-through connectivity that preserves each device's wiring. The build is simple and utilitarian, and the flat, low profile design makes it easy to route around consoles or dashboards.

Key Features

• Full 16-pin pass-through: Ensures each connected device receives the complete OBD II pinout for consistent diagnostics and accessory operation.
• No shared ground wires: Prevents ground sharing issues so devices are less likely to interfere with each other during use.
• Ultra flat low profile: The slim cable and connectors make it easy to tuck the splitter behind panels or under trim without bulk.
• Durable flexible materials: High-quality materials give the cable flexibility for tight routing while resisting repeated flex and wear.
• Protects scan tool connector: Using the extension saves wear and tear on a scan tool's OBD connector by acting as the sacrificial connection point.
• Simple packaging: No logo and minimal packaging keeps the product unobtrusive and easy to store.

Who It's For

The splitter is best for mechanics, hobbyists, and vehicle owners who regularly use more than one OBD-2 device at the same time, such as a scan tool plus an aftermarket monitor or logging device. It is also useful for workshop environments where multiple technicians may need temporary access to a vehicle's diagnostic port without unplugging the primary tool.

This is not for buyers who require advanced signal conditioning, integrated power switching, or manufacturer-specific multiplexing; it is a basic passive splitter meant to maintain the native pinout rather than adapt protocols or supply active power control.

Pros & Cons

Pros

• Maintains full 16-pin connectivity so most OBD-2 devices work together without reconfiguration.
• Flat low-profile design makes installation tidy and less obtrusive under dash panels.
• Built with flexible, durable materials that stand up to routine use and routing.
• Helps prevent wear to an expensive scan tool by using the extension as the user-facing connector.

Cons

• Plug-in compatibility and connection quality received mixed feedback from users, so rare vehicles or accessories may need testing before long-term use.
• As a passive splitter it does not provide powered switching or protocol conversion for complex setups.

Specifications

Our Verdict

The bbfly OBD II 16 pin splitter is a straightforward, good-value accessory for anyone who needs simultaneous access to a vehicle diagnostic port. Its full pin pass-through and no-shared-ground design make it a reliable choice for typical scan tools and monitors, and the low-profile construction keeps installations neat. Buyers who need active power control or guaranteed compatibility with every niche accessory should look elsewhere, but for most users this is a practical and durable splitter pack.

Frequently Asked Questions

Will this splitter affect diagnostic results?
Because it passes all 16 pins straight through and does not share grounds, it generally does not affect diagnostics for compatible OBD-2 devices, though testing is recommended for unusual setups.

Can this reduce wear on my scan tool?
Yes, using the extension cable as the point of regular connection and disconnection helps protect the scan tool's OBD connector from wear.

Is the cable rigid or flexible?
The cable uses high-quality materials to remain flexible for routing while providing durability for repeated use.