AUTOOL OBD2 Breakout Box Protocol Detector – Upgraded Version with LED Indicators Voltage Display & Power Detection is listed as an auto-part option. Confirm fitment, part number and compatibility before purchase, especially where vehicle-specific matching is required.
this part is a specialized diagnostic tool designed for use with OBD2 vehicle systems. This unit features LED indicators that provide clear visual feedback of protocol communication and operational status, assisting technicians in identifying proper signal flow and connection issues quickly.
The breakout box allows users to monitor live voltage levels and power status during diagnostic processes, which helps in troubleshooting complex electrical and communication faults within the vehicle’s onboard diagnostic port. By connecting this device between the OBD2 scanner and the vehicle port, it isolates and detects the OBD2 protocol, aiding in accurate diagnostics.
This component is particularly useful where there is uncertainty about the OBD2 protocol in use or when verifying the presence of power supply to the vehicle’s diagnostic system. The upgraded version improves user interaction by providing more comprehensive visual data via its LED displays and real-time voltage monitoring. Buyers should compare the physical connector and functionality with their existing diagnostic setup to ensure compatibility before purchase.
- LED indicators for protocol detection and status alerts
- Voltage display for real-time power monitoring
- Designed for use with OBD2 diagnostic systems
If further compatibility details or advice are needed, contacting the sales desk or submitting a request for part support is recommended.
Need help matching this item to your vehicle? Use more Display, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.

