FAILURE DETERMINATION DEVICE AND FAILURE DETERMINATION DATA ACQUISITION DEVICE

To provide a failure determination device and a failure determination data acquisition device capable of improving accuracy of failure determination of an internal combustion engine.SOLUTION: A failure determination device includes: a first determination section for determining whether there is a possibility of failure of an internal combustion engine by referring to correction amount data indicating a correction amount of an operation of a portion related to the internal combustion engine; a data acquisition section for acquiring effect factor data indicating a factor affecting the correction amount when a determination is made that there is a possibility of failure of the internal combustion engine; and a second determination section for determining whether the internal combustion engine has failure by referring to the correction amount data together with the acquired effect factor data.SELECTED DRAWING: Figure 4 【課題】内燃機関の故障判定の精度を向上させることが可能な故障判定装置および故障判定データ取得装置を提供する。【解決手段】故障判定装置は、内燃機関に関連する部位の動作の補正量を示す補正量データを参照して内燃機関の故障の可能性があるか否かについて判定する第１判定部と、内燃機関の故障の可能性があると判定された場合、補正量に影響を及ぼす要因を示す影響要因データを取得するデータ取得部と、補正量データを、取得した影響要因データと併せて参照して、内燃機関が故障しているか否かについて判定する第２判定部と、を備える。【選択図】図４