Well, there's a lot of codes there, I do see some lost communication codes. What codes come back after the battery was replaced? Because there are some random serial data codes such as the "Passenger Presence Module" - erratic and invalid serial data received, Battery Voltage below Threshold, Lost comms with Cluster, ECM problem exists, just a ton of codes that could be caused by low voltage,
Any computer is going to malfunction when its supply voltage is too low. So, the first thing to check is put a multimeter on the battery at idle and see what the charging system voltage is. You have a new battery now, so clear the codes, start it up, check the charging voltage and see what codes come back first. Turn some electrical loads on as well, headlights, rear defrost, AC, etc., those components will load the Alternator. If the Alternator is failing the voltage will drop with those loads on it. With a new battery right after start up you should see 13.6 to 14.2-volts roughly. If it starts to drop into the 12-volt range then the Alternator is not keeping up, or there is a wiring issue in between the battery and Alternator or the Alternator and the PCM which controls it.
If all looks ok with the charging system and codes come back, we'll have to check each one.
Unplugging the coil wouldn't set any codes except for that coils circuit, all these other codes could be low voltage, or a bulk connector might be corroded. I'll save the codes in your folder, so just clear them and see what happens with the new battery. There's no way to tell why it cut off on the tech, there's so many codes here.
https://www.2carpros.com/articles/how-to-check-a-car-alternator
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Sunday, July 9th, 2023 AT 6:47 PM