Control device of vehicle power transmission device

A control device of a vehicle power transmission device including a first power transmission path transmitting power by engaging a first clutch and a sub-clutch and a second power transmission path transmitting power by engaging a second clutch each disposed between an engine and drive wheels and parallel to each other, the vehicle power transmission device including a fail-safe valve for preventing simultaneous engagement of the first clutch and the second clutch, the fail-safe valve configured to be switched to a fail-safe spool position preventing simultaneous engagement of the first clutch and the second clutch by a hydraulic pressure of a hydraulic fluid supplied to the first clutch or an output pressure of a first electromagnetic valve controlling the hydraulic pressure and a hydraulic pressure of a hydraulic fluid supplied to the second clutch or an output pressure of a second electromagnetic valve controlling the hydraulic pressure, the second electromagnetic valve configured to increase the output pressure in accordance with an increase in an instruction current, the control device comprising:

• an instruction pressure setting portion configured to lower an instruction pressure of the second electromagnetic valve during release of the sub-clutch as compared to when the sub-clutch is engaged.