It was actually the running lights. I must have bumped the switch while checking the cem wiring.

Hauled the car up to Volvo where they did an etm reload. Solved the the issue. Runs great now.
Contacted xemodex and they are reimbursing the bill from Volvo.

All indications pointed to bad ecm. Did the xemodex cloning service. Also sent etm in with the ecms to check. They say it all is good. Same results. Slightly different codes though. I now have:
cem 1a5d, cem-1a62, ecm-913f, ecm532d

I've cleaned all grounds and + connections checked continuity ...

Found the wiring. I'll post in case some else needs it.

Thanks for the tip jonesg. I'll double check that connection tomorrow. I've verified all the wires from ecm to female etm plug except pin 6 from etm. Anyone have a diagram showing where this wire (gn-sb) terminates? Does it go to the cem?

Hello all,
Longtime lurker of the site. Now that I have ViDa/Dice maybe I can communicate the issues more clearly.

Car: 02 V70 2.4 non turbo 235k miles
Compression 150psi on all cylinders
Fuel pressure at 50psi

Symptoms: (smooth)idle surge up to 2500 rpm on cold start until settling at 1000 ...

What weight oil are you running? Maybe backprobe the pressure sensor wires for continuity with a multimeter when the condition appears. I'm not familiar with your car, but usually it's two wires and should read infinity/open lead on ohm setting while running. You could try putting a new sensor in ...