CONTROL DEVICE OF VEHICLE

PROBLEM TO BE SOLVED: To properly control a lock-up oil pressure even when abnormal combustion occurs to retain acceleration fluctuations of a vehicle within the tolerance.SOLUTION: The vehicle includes: an engine 10; and an automatic transmission 40 loaded with a lock-up clutch 56. The lock-up clutch 56 is controlled by the lock-up oil pressure, and executes fastening and unfastening between the pump impeller 46 and the turbine runner 48 of the automatic transmission 40. In an ECU80, a target lock-up oil pressure capable of controlling the acceleration fluctuations of the vehicle within the tolerance is calculated when the abnormal combustion of the engine 10 is detected, and the lock-up oil pressure is made match the target lock-up oil pressure. Thus, when the abnormal combustion occurs, an increase in rotation of the engine 10 and the acceleration fluctuations of the vehicle can be suppressed, and drivability can be secured while reducing the load of the engine 10.