To provide an electronic control device capable of discriminating whether an error is caused by a fault of a nonvolatile memory or accidentally occurs by the instantaneous interruption of a power source etc., with respect to a memory area where the error has occurred by a data check.
When it is determined that storage is not normally performed by referring to status data of an area being one area before an area for reading control data in the case that the control data are read from the area of a second nonvolatile memory 13, a central processing unit 10 determines that the second nonvolatile memory 13 is out of order when determining the possibility of the fault by referring to the fault history of the area one area before, and writes the possibility of the fault in the fault history of an area being one area before when determining no possibility of the fault.
Daisuke Nagano
Kentaro Fujii
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