Possibly as a result of my own incompetence, my CEL light is on. I had disconnected the switch on the thermostat housing that operates the high-speed cooling fans, and was reattaching when I noticed a bit of a pop, maybe a little spark even.

Got my trusty homebrew code reader and get the code 46, which will clear but returns. Can anyone comment on the Resonance intake manifold switchover valve? Where is it, can it be sorted without replacement, etc. Thanks any and all, Dave