2004 subaru outback h6 vdc light is on and vehicle slips and slides in inclimate weather

Even with the VDC light on it shouldn't fishtail. Unless you have a lead foot or the tires are bald. Best to have the codes read. Could just be a bad wheel sensor.

This is probably a Nissan vehicle and all is ok and working as it should be, nothing to worry about. The AT light will show initially to indicate the light is working and then go off because it has not been activated..........the VDC off light and slip light will illuminate together when the traction is being corrected (as you indicated when driving in wet weather) this is all normal, hope this helps you understand your vehicle a bit better.

Throttle position sensor.

See if the following information helpful:
1. Keep an eye on the dashboard for the indicators marked "SLIP" and "VDC Off" which will tell you the status of the computerized handling system if handling isn't normal. "SLIP" will blink when VDC is operating. "VDC OFF" means the system is off. Turn the VDC system back on if the Nissan's handling is poor by pressing the "VDC Off" button until the light goes out.

2. Adjust your driving if "SLIP" comes on. "SLIP" means the road conditions may be slippery. The VDC aids in steering and stopping, but be careful, even if VDC is engaged.

3. Remove any aftermarket suspension parts like enhanced shock absorbers if the "VDC Off" light comes on and handling is bad. The VDC system is geared for stock equipment and tires only. Use winter tires or snow chains on snow-covered roads. VDC won't substitute for the correct winter equipment.

4. Don't drive on very inclined corners with high banks and leave the VDC switch on if the handling is poor with VDC on. The system can't operate properly in that environment. Disengage VDC, or avoid those kinds of roads.

this is not exactly what you asked but may help in some way ,folloe the link to a u-tube video
Subaru Outback H6 VDC PowerSteering Ring Replacement Highlights

Subaru

I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don't prefer... rest is up to u.. U can try

I found your answer here:

Why Does the SLIP Light Come on?
The SLIP light represents the vehicle's traction control program. When illumiated it takes over control of throttle and braking based on input from a myriad of sensors. The VDC (traction control) is initiated by wheel slip, yaw and any other factors that make the computer think you're on the verge of loosing control of the vehicle. There have been a lot of complaints about the G35's VDC being too interferring and actually causing harder driving conditions. The VDC can be turned off via a switch to the lower left of the steering wheel (useful if trying to pull out of a snowy spot when wheel spin is necessary, or "spirited" accelerating). Even with the VDC turned off, however, it will still kick in if it detects substantial loss of control. NOTE: if you plan on racing, turn the VDC off. Otherwise it will ****** the throttle when you chirp the wheels from 1st to 2nd gear.

under dash connect together the 2 green multiplugs. The CEL light (Check Engine Light) will flash. Slow then fast. Count the slow flashes then the fast ones. I.E. code 21 will give 2 slow flashes then 1 fast = 21.

let me know the code and I will diagnose for you.

Dan