It is significant to get the meaning of the B1654 Code. As the code, has started with letter B, the problem is related with the body of engine. As, the problem is related with the body of the engine, it is not necessary to change anything from the engine. Cost of the engine repair is minimized. The engine system, in combination with the engine control module or powertrain control module, starts the code B1654 solenoid valve to control oil compression to the engine instrument that is connected in the valve system to change valve timing between high and low. If the engine solenoid valve has an open circuit.