With as many communication problems as you got. I would pull the CEM, clean and check the connectors. Look for Damaged CAN bus cables as you go.

I don't think I've ever seen so many modules off the Network yet so few fault codes.

This IS an odd one. Canbus is the biggest suspect here. It wouldn't hurt to use a test lamp of at least 20W (don't use a multimeter as this doesn't draw enough current) to check for voltage at fuses.

An updated video https://www.youtube.com/watch?v=jKcDOLIYR3A Great video. I did watch Your previous one about lubricating the brake booster seal and ordered the PTFE/ silicon lube from EBay, because you’re mentioning being slightly thinner versus the Volvo lubricant Do you still recommend using thi...

Not sure what a tranny clunk is - but in the end of your post you mention hard shifting between 2 and 3. Are these the same? For tranny clunk I would focus on your transmission/motor mounts. For hard shifting, I would focus on your valve body solenoids. You may get lucky and some clean fluid will re...

viewtopic.php?f=9&t=82841

If that link doesn’t work just search for “AW55 woes” and it comes up. It’s a very long discussion but will give you all the information you need to decide if this is appropriate for you.

Should allow multiple options. I had to click other. I have bought off a link in a post, off a banner, off a bookmark in my browser and by typing directly in the browser bar. But ALL of those purchases were made because of recommendations for FCP quality and service I heard here on MVS.

No need to do that either

I'm happy to announce FCP Euro is back with us as a sponsor! Whoohoo! forums-sponsored-by-fcp-big.png FCP is the forum sponsor, meaning "MVS Forums brought to you by FCP Euro". :D Thanks to Jason for working the deal, and thanks to Abscate for the communication help. There's another big an...

Rvolvos wrote: ↑18 May 2019, 10:35 Scanned for codes and got among other things ECM-5000( first time)

Clear the codes, drive the car, scan for codes, come back and list all the codes from the second scan.

There are 2 cam RPM sensors on a 2006 XC70. They are housed in round black plastic housings made by Denso. The intake one is clearly visible. Each has a connector. The rear one on the exhaust cam isn't visible until the top mount is removed.