^^^ thank you for your advice. I'm not retarded, I know the light comes on for a reason. all I said was that when I fixed "this" the light went away. so, by gods name, the thing I fixed MIGHT have had something to do with it. and actually, If your really want me to go into detail, my ABS sensor was recieving more than signal voltage, which means the ECU was putting out more than usual voltage, which mweans the battery voltage was low, due to lowe chrging voltage.... I'm ASE certified, as well as A-6 Basic auto eletrical certified.....
And how I drive my car is my business, I've been driving for 5-6 years, and have had 7 cars, which all did just fine.

 

Like I said before, all the codes the OP had has nothing to do with the charging system. His #25 is probably the main heated O2 sensor. His TRAC #s 43 & 51 point towards the ECU for the traction control system is bad.
Plus, you said "Had the same exact problem with my '91 LS400" How did you come to the conclusion that your alt was bad with those lights and those same exact codes?

 

Substantive debate is encouraged here but no Bashing or Personal Attacks please.

Cool off everyone, stick to the topic at hand, not on the people posting in the thread.

 

dont know if I had the same CODES, but I had the same WARNING lights... whatever, I was suggesting a number of things he should check before making big purchases and spending money of fixing something he might not need fixed.