This document supersedes SAE J2012 DEC2007, and is technically equivalent to ISO 15031-6:2010 with the exceptions described in 1.2.This document is intended to define the standardized Diagnostic Trouble Codes (DTC) that On-Board Diagnostic (OBD) systems in vehicles are required to report when malfunctions are detected. SAE J2012 may also be used for decoding of enhanced diagnostic DTCs and specifies the ranges reserved for vehicle manufacturer specific usage.
Rationale: Vehicle technology and regulatory actions are driving significant changes to the J2012 and J2012DA standards. The J2012 document updates for 2022 will include revisions to help users of the standard navigate the new J2012DA and application to vehicle systems.
