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Saxo Problems & Queries If you're having problems with your Saxo and you're after a bit of advice, check this forum out...

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Old 12th October 2019, 18:24   #1
TomUK
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Default Cancelling engine warning light

Citroen Saxo Desire, 1.1L. Engine began to run rough. Engine management light came on. Went for easiest option and checked spark plugs. One had failed (oiled up). Stuck a replacement plug in - problem solved, running well again.
Warning light remains on though. I know it has to be re-set using a diagnostic unit, but I keep reading that disconnecting the battery for an hour or so and then re-connecting it will re-set the light.
Anybody tried this - did it work?
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Old 13th October 2019, 14:21   #2
stevo67
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You need to find out why the spark plug oiled up,or you'll be forever changing the plugs mate.
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Old 15th October 2019, 18:43   #3
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I replaced all the plugs around five weeks ago. No problems yet. Could it just have been a failure of the original plug itself, which would mean it wasn't sparking and therefore oiling up? The plugs had never been changed since the car was new in year 2000 apparently.
Would still appreciate advice about my original query.
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Old 15th October 2019, 19:27   #4
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Disconnecting the battery won't reset the light,you can buy cheap OBD readers on ebay to clear the fault codes.Or a garage could do it cheaply for you.
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Old 15th October 2019, 22:31   #5
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Quote:
Originally Posted by TomUK View Post
Citroen Saxo Desire, 1.1L. Engine began to run rough. Engine management light came on. Went for easiest option and checked spark plugs. One had failed (oiled up). Stuck a replacement plug in - problem solved, running well again.
Warning light remains on though. I know it has to be re-set using a diagnostic unit, but I keep reading that disconnecting the battery for an hour or so and then re-connecting it will re-set the light.
Anybody tried this - did it work?
That's not how the EML works

The light will only stay on if a problem persists, when the problem goes away the light goes out but the code stays stored.

You need to know what the code is to have any idea of where to look, in order to start fixing it.

an oiled up plug would point to a mechanical issue, stem seals/rings etc.

It wasn't just wet and sooty from a misfire? definitely oil?
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Old 17th October 2019, 14:48   #6
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Will have to check plug again for any repeat of the oiling issue. If its shows signs of oiling up again I guess there may be a seal problem. Over five weeks now since I fitted a new set and still running normally.
Just a final query. Does a year 2000 Saxo 1.1 Desire have a multi-pin OBD connector under the dash? If so, where exactly is it?
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Old 17th October 2019, 23:41   #7
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Will have to check plug again for any repeat of the oiling issue. If its shows signs of oiling up again I guess there may be a seal problem. Over five weeks now since I fitted a new set and still running normally.
Just a final query. Does a year 2000 Saxo 1.1 Desire have a multi-pin OBD connector under the dash? If so, where exactly is it?
Keep an eye on it, but if there is still a problem the light remains lit. It could be unrelated.

If it is an mpi engine with 3 plug ECU, this is OBD-II compliant. The socket is next to the bonnet release.

If it is a single plug ECU, this is not OBD compliant and you will need PEugeot Planet software/diagbox with lexia cable to read the fault codes. The socket is in the same place and looks identical to the OBD-II. (some generic garage computers can read these ECU's such as Snap On Modis etc)
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