I've had this intermittent EML code pop up, it happens every 3-4 months and once cleared doesn't return for the next 3-4 months... it always happened during more extreme weather conditions... so I'd kind of attributed it to that as once cleared it stayed cleared. But in the last 36hrs it's returned and won't stay cleared... returning almost immediately. It doesn't seem to affect the engine performance which is as quick and smooth as it normally is. Doesn't seem to affect MPG's either as I've been averaging 39-40mpg around town for the last 6 months or more. My OBDII reader gives me this info So is this likely to be a faulty sensor as I think a valve stuck open would cause bigger issues. But more importantly... how to fix it without resorting to paying Honda prices... I'm still putting the car back on the road after an accident last month and the last thing I can afford is more repair bills as the insurance money is all but spent now (had house repairs that needed doing too). If it's going to be expensive... it could be the end of the car as it's now classed as Cat-D. Would be a shame to let this be the end.. but economics may have to take precedent.