Every few hundred miles i get the engine light up, i reset the code P0130 & sometimes P0150 (left & right o2 sensors) I reset it with my reader & it's ok again for a while.

Any ideas if it's likely to be a sensor or something more expensive?

 

there are four oxygen sensors in the 2.7T common wisdom is if you need to replace one, you should replace all. ~$100 US, each. Intermittent problems like you describe are usually a sign that the sensors are starting to go bad or you have an exhaust leak.

good luck

 

Four! sounds about right, i can get them for about £30 ukp each, so not too bad. Car drives 100% fine, no issues..

Well, not with the engine, apart from oil leaks.

 

sound like your car and my car could be twins (or at least related)

your car talks funny though...

all stuff I plan on taking care of, valve cover gaskets for the oil leaks and O2 sensors...eventually. as soon as I get the money/motivation/time...meantime as long as it gets me from A to B I will keep adding oil as needed and ignoring the CEL

 

Yep!!