Hi,
The Check Engine Light on my 1998 s70 GLT with 72k miles came on recently.

I had the error code read off the OBDII at an AutoZone and they said the code was P0410 - Secondary Air Injection System Malfunction.

The person at the Autozone thought it might have to do an air pump that worked with a load leveling supsension ??? - I did not even know an s70 had that !!

Any information will be helpful.

thanks

"The person at the Autozone thought it might have to do an air pump that worked with a load leveling supsension ??? - "

---All I can say to that is .. WOW! Load leveling? ROTFLMAO!
Secondary air intake pump is an emmissions related device. It kicks on
soon after you start driving and forces "extra" air into the system which
heats up the cat. convertor quicker.. This insures that the Cat burns off
more in the exhaust than it would if it were allowed to heat up slowly.
This is not a driveability issue and is a common problem with
Volvo/Volkswagen/Audi to list a few.
--
vw bus site w/ Volvo section - http://www.geocities.com/vw_bus_74/index.html

Thanks for the info Jen and Axel. I will have the air pump and SAS valve checked out at a local shop.

For future reference, I found these instructions on "volvospeed"
http://www.volvospeed.com/Repair/airpump1.htm

[Q] ---All I can say to that is .. WOW! Load leveling? ROTFLMAO! [/Q]

Yeah, I was scratching my head on that one too. But I am new to Volvos so.... The folks at AutoZone have been very helpful always..

Check volvospeed.com for info on secondary air injection. Search archives here as there were several postings regarding P0410. And don't replace the pump before testing it.