The B1726 Code is related with the engine and this code is set for all of the car engine. Meaning of the code differs for the manufacturer and model number. You should not try to solve the problem in your place and hand over the car to the professional. The engine system, in conjunction with the car engine control module or powertrain control module, starts the B1726 code solenoid valve to regulate oil pressure to the engine device that is fit in the valve system to switch valve timing between High and low. If the engine solenoid valve has a short circuit and a DTC is stored.