Mk3 Cavalier Owners Club | Vauxhall Cavalier Dot Com

Done a paperclip test on the cavalier today and codes 21 and 65 came. 21 is throttle position sensor and 65 is carbon monoxide potentiometer does anyone know whereabouts the carbon monoxide potentiometer is?? It's a 2.0 seh engine

Im not going to pretend to know what this is, but I found this by searching on google, http://www.migweb.co.uk/forums/engines- ... meter.html

Cheers mate I'll check it out first thing in the morning

Well every day is a school day.
I had absolutely no idea / never heard of it.

I tweaked mine once as the emissions test showed higher than it was previously, still in spec but had crept up.
Think I made a note of how much I moved it.

Alan

What way do you turn it mate and how do I clear the codes?? I've had the battery off for 30 minster but still there

The engine management light should go out when the problem has cleared, and I believe the code clears after 20 non fault ignition cycles if that makes sense. I suspect that if your engine does have this potentiometer then it sounds like it could be your problem, unfortunately I don't know what it is or looks like but I suspect it will have at least 3 wires going to it and if it is just a potentiometer then you should be able to test it with a multimeter using the ohms range.