EGR failure root cause?

I have a 2018 Volt Premier with 65K miles, 80% electric, most gas miles are on highway (I plan electric use to avoid gas engine stop-starts). It’s in the shop for BECM now (under warranty) and the shift-to-park was fixed in the first year of ownership. I would like to understand if there are preventative measures for the EGR issue or any maintenance that would help. I would happily replace it to avoid a failure. I am prepared with a spare fuse and trial run unplugging the connector.