You're going to pay through the nose for a new VAF. It's worth the effort to at least try to salvage what you have first. This may seem like a ridiculous suggestion, but I learned to solder when I was a kid by building kits like these from Velleman. You can practice and build confidence without risking destroying a hard to replace VAF... Looks like they still make them, and there's a whole series: https://www.amazon.com/Velleman-MK129-Crawling-Microbug/dp/B000TA58HQ
As far as the codes go, what are they? Have you followed the flow charts in the factory service manual (FSM) to see which one Mr. T says you should start troubleshooting first? Throwing parts at a problem often doesn't get to the root of the issue and just empties your wallet in the process.
As far as the codes go, what are they? Have you followed the flow charts in the factory service manual (FSM) to see which one Mr. T says you should start troubleshooting first? Throwing parts at a problem often doesn't get to the root of the issue and just empties your wallet in the process.