> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# OBD Plug (16-pin) to DE-9 (DB-9) Socket Adapter Cable - 1 meter long

**Type:** Product page · **SKU:** ADA4841 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/obd-plug-16-pin-to-de-9-db-9-socket-adapter-cable-1-meter-long.html ([markdown](https://core-electronics.com.au/obd-plug-16-pin-to-de-9-db-9-socket-adapter-cable-1-meter-long.html.md))

Not to be confused with ODB, OBD stands for On Board Diagnostics and is used for analyzing and diagnosing vehicles. It's the thing your mechanic plugs into to find out why you've got a blinking engine light.

## Pricing

- **Price:** $19.80 (inc GST) — $18.00 AUD, exc GST
- **Quantity discounts:** 10+ $17.46 (exc GST) · 50+ $17.10 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 08 and Sep 14.

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## Description

[Not to be confused with ODB](https://en.wikipedia.org/wiki/Ol%27_Dirty_Bastard), OBD stands for [On Board Diagnostics and is used for analyzing and diagnosing vehicles](https://en.wikipedia.org/wiki/On-board_diagnostics). It's the thing your mechanic plugs into to find out why you've got a blinking engine light.

Technically, OBD uses CAN bus and, hey, whaddya know, Adafruit have got some CAN-capable microcontroller boards here at Adafruit so this **OBD Plug (16-pin) to DE-9 (DB-9) Socket Adapter Cable** will come in super handy when you want to attach one of Adafruit's CAN boards to your car!

On one end is a 16-pin OBD plug that goes right into your car's port. The other end is a DE-9 'CAN bus' connector. Sometimes DE-9 connectors are referred to as DB-9. Technically that's the wrong name, but it's so ingrained that most people only know the connector as DB-9.

**Note: Despite having a serial port-looking end, this cable is not meant to be plugged directly into a computer’s serial port. It is meant to plug into a hardware CAN BUS interface. It does *not* contain circuitry or any kind of translator, it only re-wires a OBD plug into a DB-9 plug**

Here's the pinouts, you'll need to match this up against the CAN board you have to make sure the CAN H, CAN L and GND in the right spots.

- **DB-9 pin 1** connects to **OBD pin 11**
- **DB-9 pin 2** connects to **OBD pin 14 : CAN L**
- **DB-9 pin 3** connects to **OBD pin 5 : Signal Ground**
- **DB-9 pin 4** connects to **OBD pin 8**
- **DB-9 pin 5** connects to **OBD pin 1**
- **DB-9 pin 6** connects to **OBD pin 4 : Chassis Ground**
- **DB-9 pin 7** connects to **OBD pin 6 : CAN H**
- **DB-9 pin 8** connects to **OBD pin 3**
- **DB-9 pin 9** connects to **OBD pin 16 : Battery Power**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/4/8/4841-02.jpg)