Patent ID: 8095257

Claim:
An electronic control apparatus comprising: a rewritable nonvolatile memory; a monitoring means for monitoring a first item and a second item; and an abnormality storing means configured (a) to store, when said monitoring means detects an abnormality in said first item, identification information identifying said first item and a diag code representing a type of said abnormality detected in said first item in said rewritable nonvolatile memory, and (b) to store, when said monitoring means detects an abnormality in said second item, identification information identifying said second item and a diag code representing a type of said abnormality detected in said second item in said rewritable nonvolatile memory so that said first item and its respectively corresponding diag code is uniquely identifiable from said second item and its respectively corresponding diag code based on data stored in said rewritable nonvolatile memory.