Boy the Apple police are knocking on your door! << Just kidding >>
Not to worry you own the hardware and technically have a license to run the software until the system dies, still many years more of life! I’m still using a 2012 unibody watching YouTube vids and other web stuff until Apple makes an upgradable and repairable system.
So… You are facing two problems you likely need a new battery, but the diagnostics is telling you the logic board VRM logic has an issue. Often times I find one or two tantalum capacitors have failed. You might want to find someone with micro-soldering skills and access to the schematics and board views to figure out which cap needs replacing.
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@notveryexperien what is your 820-xxxx board number? Should be something like 820-3662 or 820-3787. there are a couple of components that are worthwhile checking with the ID0R error. Do you have a multimeter? Do you know how to do basic testing with it?
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
820-3662. Anything common problems with that logic board
crwdns2934271:0crwdnd2934271:0 Notveryexperiencedguy crwdne2934271:0
And I do have a multimeter.
crwdns2934271:0crwdnd2934271:0 Notveryexperiencedguy crwdne2934271:0
@notveryexperien TB0T is your battery temperature sensor. If you have the board out, post some good pictures of both sides with your question. ID0R originates with AMON so it looks like it does have issues with the current sensing circuitry. Once we see your board, we can guide you on what to check where.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0