Volvo S60 T5 2010. Have an error message 'transmission performance low' when stop or when switching from D to R. However, it goes away after engine off and on again. It happens once in a while. More frequent the past few days. What would be the causes and how can I fix it.

SOURCE: Transmission Service Required 2001 Volvo S60 T5

Hi,

These cars had a few issues with the transmissions. Sometimes upgrading the software and flushing the transmission will help, sometimes a new valve body will fix the problem, but often the transmission will need replacement due to internal failure.

The first step is to have a shop read out all the fault codes, read all the service bulletins and tech notes from Volvo regarding the transmission problems and then make a decision based on all of that information.

Good Luck,

Bret
RepairPal.com

SOURCE: 2001 volvo s60 t5 - performance reduced warning message, limp mode activated

I had exactly the same problem on my UK 2001 S60.
It was caused by the throttle control housing gaskets not being serviced properly and consequently the entire housing had to be replaced - not a cheap job -and a valuable lesson learned - use a reputable volvo specialist to service your volvo - I didn't and I learnt the hard why! only a volvo specilaist would have known about this I went to several other main street garages & none of them could even diagnose the problem let alone fix it. Although they did do numerous other things first before they gave up - ie replaced titanium spark plugs.
Before it stoppped running altogther and went into "limp home mode" there were tell-tale engine/throttle surges when the car was idle, but in gear.
It is now running "like new" & I will never get another garage to service it, as this could have been avoided - however they can also wear out after about 10years - so my bad services just made it happen sooner!
I hope this helps!

SOURCE: Message ' Reduced engine performance'

sound like transmission slipping .fuel filter clogged.turbo stop woking.dirty fuel injectors.

SOURCE: Volvo S60 sensor ?

Sounds like an oxygen sensor (there are two). I had a recent problem where I had a rough idle and my S60 continued to stall out. Turned out to be the rear oxygen sensor. After replacement, car idles nicely and car drives normally.

SOURCE: how do i replace ignition cylinder in volvo 2002

The link below is not for your exact model, but may be of help:
http://volvospeed.com/Repair/ignition_S80.html