I have that same obd reader...works great on my xc70 for reading and clearing obd codes...you can also check some functions of components but that's it.

Same thing happens to my '03 xc70's cluster.....turns on and off and all sorts of messages appear. Looked online for people who repairs them....Xemodex is very good at this,although expensive...you can find a couple of them on ebay...had mine fixed by this shop in Long Beach.$200 with lifetime warra...

I don't think it's wise to have it removed...it's an integral part of your emmision system..you car's ecu might make all sorts of adjustments to compensate if you get it removed resulting to more problems in the future...just my opinion...let's wait for what experts say. I have the same code on my o...

I just hope the reduced engine performance message won't go back... it's scary if you're on the freeway...

Hi oragex...going 119k miles now... timing belt changed by previous owner..I'll look into the ac compressor pulley...I can feel the strain on engine when ac compressor kicks in... thanks.

Got a '03 xc70 a few months ago..she drives fine except for a slight idle hunting when ac is on..can't see it on the tach but I feel it on the steering wheel vibration. Cleaned maf with maf cleaner and it solved the idle hunting..one day took it to palm springs... everything was fine except on my wa...