88irocvert

Dynamic Drive Malfunction showing up under different circumstances with 5D65 (Directional Control Valve) error every time.
1. How do I know it's the valve that's bad and not the control unit? (I read the control unit activates it)
2. If I find out it's really the valve, is there any way to replace just the culprit valve and not the whole block?
3. Do I need to "register" the change?
Thanks for any help.

H F

Have you checked the fluid , just to make sure thats whats not throwing the code ?

88irocvert

Thanks for your response. Although there is a slow leak in the system which I have been unable to trace since it takes several weeks for the fluid to go under the necessary level, this error occurs when the fluid level is anywhere (low or OK). I realize the system does measure line pressures and such so I wonder if such a slow leak would alter these pressure readings and yield the error. Any thoughts?