J1962 – Defines the physical connector used for the OBD-II interface.
J1850 – Defines a serial data protocol. There are 2 variants- 10.4 kbit/s (single wire, VPW) and 41.6 kbit/s (2 wire, PWM). Mainly used by US manufacturers, also known as PCI (Chrysler, 10.4K), Class 2 (GM, 10.4K), and SCP (Ford, 41.6K)
J1978 – Defines minimal operating standards for OBD-II scan tools
J1979 – Defines standards for diagnostic test modes
J2012 – Defines standards trouble codes and definitions.
J2178-1 – Defines standards for network message header formats and physical address assignments
J2178-2 – Gives data parameter definitions
J2178-3 – Defines standards for network message frame IDs for single byte headers
J2178-4 – Defines standards for network messages with three byte headers*
J2284-3 – Defines 500K CAN Physical and Data Link Layer
J2411 – Describes the GMLAN (Single-Wire CAN) protocol, used in newer GM vehicles. Often accessible on the OBD connector as PIN 1 on newer GM vehicles.
SAE standards documents on HD (Heavy Duty) OBD
J1939 – Defines a data protocol for heavy duty commercial vehicles
ISO 9141: Road vehicles — Diagnostic systems. International Organization for Standardization, 1989.
Part 1: Requirements for interchange of digital information
Part 2: CARB requirements for interchange of digital information
Part 3: Verification of the communication between vehicle and OBD II scan tool
ISO 11898: Road vehicles — Controller area network (CAN). International Organization for Standardization, 2003.
Part 1: Data link layer and physical signalling
Part 2: High-speed medium access unit
Part 3: Low-speed, fault-tolerant, medium-dependent interface
Part 4: Time-triggered communication
ISO 14230: Road vehicles — Diagnostic systems — Keyword Protocol 2000, International Organization for Standardization, 1999.
Part 1: Physical layer
Part 2: Data link layer
Part 3: Application layer
Part 4: Requirements for emission-related systems
ISO 15031: Communication between vehicle and external equipment for emissions-related diagnostics, International Organization for Standardization, 2010.
Part 1: General information and use case definition
Part 2: Guidance on terms, definitions, abbreviations and acronyms
Part 3: Diagnostic connector and related electrical circuits, specification and use
Part 4: External test equipment
Part 5: Emissions-related diagnostic services
Part 6: Diagnostic trouble code definitions
Part 7: Data link security
ISO 15765: Road vehicles — Diagnostics on Controller Area Networks (CAN). International Organization for Standardization, 2004.
Part 1: General information
Part 2: Network layer services ISO 15765-2
Part 3: Implementation of unified diagnostic services (UDS on CAN)
Part 4: Requirements for emissions-related systems