Any help please
 

Hi folks, I'm looking to get a blob wrx, lad says it has a couple of issues, 1st being it only boosts about half it's normal boost so I asked if tis in limp mode, he said self diagnostics says it's the boost solenoid, as it clicks only every 3 seconds and not fast like it should, easy fix really, but it also has this po558 brake servo sensor circuit high voltage, are we talking broken abs unit here or is the alternator done in, thanks in advance mark

If you are selling a car and it has a problem which is an easy fix then why not do it and get more for the car ?i think walk away but it is your choice.(self diagnostics?)

This is what my gut feeling is cheers

Where is the car?? As could be worth getting a diagnostic done to see what is wrong.

Apparently the car has self diagnostic but I think that's just to click the boost pack, and error code p0558 which won't clear

Always thought self diagnostics only on classics.