There are a number of things that we need to start with. Clearly if this just started then we could have an issue with a module failing when you reconnected the battery.
However, I would suggest we start with running through the info attached on these codes and find out what this shows.
I would start with the relay code but keep in mind that it may be due to you jumping the relay.
So, if you want to clear the codes and then try starting the engine again with the key and see if that resets.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
If it does not reset, then clearly that was not an issue and we just need to replace the module.
Please see the info attached and let's start running through this and go from there.
Thanks
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Friday, April 15th, 2022 AT 12:56 PM