Hi folks, I have been here before to discuss this problem - the dreaded S60 tickover issue!! I have had the Throttle Body Replaced about 12 months ago complete with upgraded cooling fan and this seemed to have sorted the problem - at least until now.......

Unfortunately the problem is now back with warning message (Emmission System Service Due) and the orange MIL light is on.
Having had the laptop on the job it tells me that the error is with the oxygen sensor (the one after the cat convertor) However I have also now replaced this sensor too, but to no avail.

A further point of note is also that the voltage seems to be a problem in that I have replaced several bulbs in the last few months (often the headlamp bulb)

One would think that it shouldn't be necessary to clean out the throttle body every 10,000 miles or so.....?? So maybe there is another issue??

I would be really pleased if anyone were able to offer any further advice or expertise to help me identify exactly what the problem is??

Thanks in advance for any help offered, cheers Ben