Eml On

[Scott2gogo]

Hi,have xsara picasso on a year2000 1.6 petrol,been standing a while now I have em light on although car runs ok,is there a way of removing light without the need to get it plugged into a diagnostic machine,or any tips as to why it has come on ,thanks andy

[Johndouglas]

There are dozens of reasons why it's on. Get a reader on it and it'll tell you why. Can also turn it off - but without correcting the fault, it may come back on again.

[paul.h]

Welcome to the forum.

 

Most things that put the eml on will put the car in to limp mode where the performance will be reduced. Only one I can think of that may not cause this would be an exhaust catalyst problem or the lambda sensor after it. A neighbour's Peugeot 206 did this and the code reader fault code was for a catalyst problem and the live data from the reader showed the inlet lambda sensor was switching ok but the outlet lambda sensor was also switching whereas it would have been steady if the cat had been ok. After fitting a new cat is was ok and the eml stayed off after resetting. However, I would not do anything until the fault code has been read since you could replace lots of parts until the faulty one was found. Some members on the forum are willing to help with diagnostic checks and there is a pinned post under the C5 section.

 

If you are going to buy a code reader make sure it will work on your car since OBD compliance on petrol cars was not required until 2001. Also it is better to get one that gives live data since it helps to determine a fault, as an example from Gendan for £60 http://www.gendan.co.uk/product_GCR25.html