OBD Connector Pinout

This guide is applicable to the following device / devices:

Mini

Overview

The OBD-II (On-Board Diagnostics, revision 2) connector is the standard diagnostic port used in all modern vehicles. The AutoPi Mini connects to your vehicle through this 16-pin connector, allowing you to read vehicle data, monitor diagnostics, and access engine parameters in real-time.

This guide provides the pinout configuration for the OBD-II connector on the AutoPi Mini device, helping you understand the pin layout and best connection practices.

Connector Layout

Connection Best Practices

• Ensure a secure connection to avoid intermittent data loss
• The connector should click firmly into place
• Power cycles are not needed when plugging in the device
• The AutoPi Mini powers on automatically when connected to a vehicle with the ignition in the ON or ACC position
• Verify no bent pins before inserting the connector

Vehicle Communication Protocols

The AutoPi Mini automatically detects and communicates using the protocol supported by your vehicle:

• CAN Bus (ISO 15765-4): Preferred modern standard for most vehicles manufactured after 2008
• ISO 9141-2: Older protocol still used by some vehicles
• KWP2000: Keyword Protocol 2000, alternative to ISO 9141-2
• J1850-PWM: Used in some Ford and GM vehicles

The device intelligently handles protocol switching based on your vehicle's capabilities.