What solenoid is the code for? Sorry, I don't have access to a list at home.
Usually, a solenoid would be given constant power, and the computer would control the ground to complete the circuit when operation is desired. Are you checking at the solenoid, or is this a relay? If you have power and ground at the solenoid, the solenoid should be operating. If it's not, the solenoid is most likely bad.