I pulled the 40A fuse after determining that I could not desolder the old relay without a proper desoldering pump. Engine sounds better without that pump running erratically.

CEL is currently off due to battery being disconnected during abortive desoldering attempt and not having enough miles driven after reconnecting battery.

Here's a question to which someone might have the answer: Assuming that all codes are cleared will the P0410 return if the 40A fuse is missing? Has anyone traced the schematic on this point?

Thanks