exhaust gas monitor warning light

[beechey]

what does this mean

seems to stay on every now and then?

will it do any damage?

 

[Francis182]

Mine's on constantly 'cos of the decat...don't even really notice it now. Might pull the bulb out or something!

If you have a stock exhaust system then I'm guessing you could have a dodgey lambda sensor or maybe your cat is knackered?

 

[v15ben]

Lambda sensor is often the issue. Is it on permanently or does is it intermittent? Mine was on permanently and it was the pre-cat lambda sensor. Easy enough to sort out though and about £55 for a new sensor.

 

[beechey]

its not the first time its been on 4th as it goes not happenend for a good year now

first time had to get aa out and they just reset it
second time filled it up with petrol and it went after about 5 miles of driving
third time just turned engine on and off
mines not a standard zorst

 

[fUbAr]

Mine came on at the beginning of December randomly. It stayed on for a week then cleared itself
It came on again yesterday and hasn't gone off yet. Standard 182 exhaust.

I'm not bothered about it.

 

[Stava]

It's to do with the ecu. It prioritises faults and looks at them on a set time scale. So it will see a faulty sensor and give you a light on the dash, realise it's not really an issue and after a few days cancel the light on the dash, then, say a month later it will look at it again, see the same fault, give you a light, and so on.

IIRC

 

[beechey]

sounds like my cars got a brain lol gonna fill her up today with some 98 ron see if it goes away

 

[beechey]

its reset its self no more warning light maybe i should stick to 98 ron

 

[21castlehill]

My emmissions light (standard 182) comes on now and then but only during heavy rain and clears a few days later, car performs as normal, whilst its lit. Must look at it when I get round to fixing the heat shield rattle and deciding if the exhaust needs replacing.