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Author Topic: Why did my emissions light come on?  (Read 892 times)

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VR4Dave

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Why did my emissions light come on?
« on: 16 November 2010, 16:15:36 »
Hi all, can anyone tell me why the light may have come on and stayed on?

Done pedal trick and have codes 430 and 420.

Cheers in advance.
Dave.
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RobG

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Re: Why did my emissions light come on?
« Reply #1 on: 16 November 2010, 16:25:00 »
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djac

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Re: Why did my emissions light come on?
« Reply #2 on: 16 November 2010, 17:14:31 »
Have you recently fueled up at a different petrol station than usual?

It is also possible for fuel quality to vary at the same petrol station - supermarket fuel stations are notorious for this.

When this happened on my car the advice on this forum was to fill up with decent fuel and/or fuel additive, then give it the old 'Italian tune up'!  ::), also to fill up with decent fuel every 3-4 tankfuls after that.

My EML light has been on a couple of times since, usually after filling up at Tesco, but it usually goes out after a while.
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VR4Dave

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Re: Why did my emissions light come on?
« Reply #3 on: 16 November 2010, 18:00:48 »
DJAC, I think you are on to something, a few weeks back my wife's meriva started running bloody awful and the emissions light came on and it had a misfire code. It was due a service anyway so I changed plugs. filters oil etc disconected battery to clear codes and it solved the problem.
When I was grilling her about whether she'd put diesel in it, she did say she'd filled up at safeway as tesco was busy, I thought nothing of this.....

On sunday I filled up at safeway as shell garage was busy  :-[
seems a bit of a coincidence and I wonder how many other drivers have had similar problems and spent a fortune getting their cars "fixed"
Will give it a tank full of shells finest tomorrow.

Dave.
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Kneepad

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Re: Why did my emissions light come on?
« Reply #4 on: 16 November 2010, 21:03:08 »


Just as a sidenote, disconnecting the battery does not clear fault codes.   ;)
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VR4Dave

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Re: Why did my emissions light come on?
« Reply #5 on: 17 November 2010, 07:38:50 »
I've not checked if codes are still there on the meriva, i disconected battery to get rid of the light.
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