Not for me but for a friend of a friend (I'm a SNDB) Apart from being illegal, being likely to fail a roadside check and being certain to fail an MOT, is any further damage likely to be done by driving a car with a non-working catalytic converter? The dashboard light says that emission control has failed but the owner would rather just keep driving until the MOT test which is due in a couple of months. Thanks! Nick

Doubt it. The engine will just keep going and if the cat's not working (or not there) it really makes no difference to the engine. This depends, of course, on that dash light only meaning the cat has failed, and not something else in control of mixture.

Is a car question OT?

Dec 12, 2013 42 Replies

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Adrian 12 years ago

They just put that in to scare numpties into actually doing something.

Have a google for a complete list of fault codes for each of them. I'll bet there's an absolute fuckload of light-lit codes that aren't emissions related.

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bert 12 years ago

Which I take to mean you haven't got the faintest idea what you are talking about.

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Adrian 12 years ago

Tell us what the cars are, then, and I'll find you a list of non- emissions related fault codes that'll put this "emissions out of spec" light on.

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