2005 S40 idles and stalls - 2000 Volvo S40

You have lots of codes

Have you not used Google to look them up?

I doubt all the codes are failed system issues

I suggest to anyone coming to this site, to use the
services of a repair shop or buy & learn how to use professional
scan tool software,I fail to see how you can diagnose anything
without it

sounds like it could do with a good tune up.

Could be a software problem if so it needs to be done by volvo dealership. If someone other than a Volvo dealer attempted it and it went wrong - there's a fair chance you could end up with a non-functioning car and a very large bill to get it working again.

the tube for the turbo is shot. as for the rest.... get rid of car

When an issue such as this occurs, you have a faulty TPS-throttle position sensor, and it needs to be replaced. The replacement is fairly simply, and you may be able to get the part at an auto parts store. The TPS is located on the throttle body.

There could be many reasons, the idle air valve got stuck or is going bad, maybe a little got caught in the injector or maybe a sparkplug was acting up, i wouldnt worry unless its a problem,i know you dont want to get stuck out on the road, but this kind of problem is going to be hard to find unless it happens more often, i think it may be a idle air valve ,this would just make car stall at a light or run a little rough but you would be able to restart and go, hope this helps.

I had this with a 03 S 40,Very easy fix it was the idle controll motor. Just took it off cleaned with carb cleaner,to get at it remove the thottle cover it has 2 10mm bolts holding it on and looks kinda like a solinoid with 1 plug going to it!

I would have the throttle plate cleaned because when they get dirty they have the symptoms that you are describing

YOU MAY HAVE A IDLE SPEED CONTROL VALVE PROBLEM, CLEAN IT FIRST, THEN DISCONNECT THE BATTERY, FOLLOW THE PROCEDURE I HAVE ATTACHED.

Here is the most common cause of this stall and idle speed issues, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

if you have over 125k miles on it chances are your about time for a new catalytic convertor... can cause a rotten burnt smell... lack of power.. and even a stall... or no start