{"title":"OBD-II to DB9 Cable","handle":"obd-ii-to-db9-cable","url":"/products/obd-ii-to-db9-cable","description":"The OBD-II to DB9 Cable connects your vehicle's OBD-II diagnostic port to a DB9 female serial connector, providing access to automotive bus protocols for diagnostics, data logging, and vehicle hacking projects.\n\nThe cable is 5 feet (approximately 1.5m) in length and breaks out all key OBD-II pins to the DB9 connector, supporting CAN, ISO 9141-2, and J1850 protocols.\n\nKey Features\n\n\nOBD-II to DB9 Conversion – Standard pinout for automotive diagnostic interfaces\n\nMulti-Protocol Support – CAN High/Low, ISO 9141-2 K/L Lines, and J1850 BUS+/−\n\nBattery Power Pin – OBD-II pin 16 (battery power) mapped to DB9 pin 9\n\n5-Foot Cable Length – Approximately 1.5 metres for comfortable reach\n\n\nPinout (OBD-II → DB9)\n\n\n\nPin Description\nOBD-II Pin\nDB9 Pin\n\n\n\n\nJ1850 BUS+\n2\n7\n\n\nChassis Ground\n4\n2\n\n\nSignal Ground\n5\n1\n\n\nCAN High (J-2284)\n6\n3\n\n\nISO 9141-2 K Line\n7\n4\n\n\nJ1850 BUS−\n10\n6\n\n\nCAN Low (J-2284)\n14\n5\n\n\nISO 9141-2 L Line\n15\n8\n\n\nBattery Power\n16\n9\n\n\n\n\nIdeal For\n\nAutomotive diagnostics and data logging\nVehicle CAN bus projects\nConnecting OBD-II hardware interfaces\n\n\n\nNote: This cable is not designed to plug directly into a computer's serial port. It requires a hardware interface (such as an ELM327 or CAN bus adapter) between the cable and your computer.\n\n\nResources\n\nPinout Diagram\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":13323,"title":"Default Title","sku":"SF-CAB-10087","price":31.1,"on_sale":false,"in_stock":true,"available_quantity":285,"option1":"Default Title"}]}