PCM replacement

Normally disconnecting the battery will not reset the PCM but it will cause the memory to be wiped and if that happens it will clear any codes.

However, this is not the best way to do this because it will cause the monitors to erase as well and if you have an inspection that needs to be completed for emission purposes then it will not pass. The best way to do this is to clear the codes with a scan tool.

Here is a guide that will help with this:

https://www.2carpros.com/articles/check-engine-light-clear-codes

Please see the info below on how to replace the PCM. Let us know if you have other questions.

Thanks