Diagnose and predict errors using Diagnostic Trouble Code Markov chains

摘要

A system and method for fault diagnosis include receiving information defining a relationship between fault modes and diagnostic trouble codes and extracting diagnostic trouble code data including set times, frequency data, and diagnostic trouble code sequence information for a plurality of diagnostic trouble codes relating to a plurality of failure modes. The system and method further include constructing a Markov chain using the diagnostic trouble code data for each of the plurality of failure modes, training the Markov chain to learn a set of condition parameters using the diagnostic trouble code data, and calculating the likelihood of a diagnostic trouble code sequence for each of the Plurality of failure modes using the trained Markov chains.