Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: ians on 12 October 2008, 22:39:06
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My EML came on yesterday on my newly acquired 3.2 :'(. Code is 0430.
I think this is the common (?) precat problem?
If so, I believe it is not to worry about, although I'm not really happy having a light on permanently (not to mention that if something else fails I won't be aware of it).
Can the code be reset (and how soon will it reappear?)
Short of a new precat or two, are there any solutions that have been proven?
Cheers,
Ian
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Yep, that sounds like pre-cats, although only one of them (no 0440 for the other side).
When mine first started happening it would reset itself after a while. Seemed to be more prone to coming on when switching brands of fuel (a few miles after filling up normally) although that may be my imagination.
A long motorway cruise seemed to stop it for a while.
Now it's on all the time. >:(
I have an ELM reader that can be used to reset it if you like?
I believe Albatross has re-located the post-cat lambdas to after the main cats and that has shut it up. Some lotions and potions are available to clean cats, with mixed reports of effectiveness so probably snake oil.
Then there's always bulb removal... ::) Can't say I haven't been tempted. :-[
Kevin
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My EML came on yesterday on my newly acquired 3.2 :'(. Code is 0430.
I think this is the common (?) precat problem?
If so, I believe it is not to worry about, although I'm not really happy having a light on permanently (not to mention that if something else fails I won't be aware of it).
Can the code be reset (and how soon will it reappear?)
Short of a new precat or two, are there any solutions that have been proven?
Cheers,
Ian
0430 bank 2 cat system efficiency below threshold.
Sorry to hear Ian, pia, maybe regular pedal tricks will help or another cat from one of our friendly breakers?
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Its not just me then Kevin ;) I'm not really happy though as if another more serious issue comes up I will likely miss it - despite any promised regime of regularly checking for codes.
If you are up this way maybe you could give me a shout and we can try your reader on it?
Chris - what do you mean by regular pedal tricks? (I followed your pedal method to read the codes..)
Cheers
Ian
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I was over your way about 3 hours ago. ::)
.. but I'll let you know next time. :y
As there is a separate EML and emissions light on the 3.2, not sure what else lights the emissions light but not the EML.
Kevin
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Bummer.
Give me a shout next time, even if its just for a cup of tea..
I saw some discussion about 'Cataclean' - has anyone tried this that we know of? (or is that a variety of the oile de serpente to which you refer..)
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Cataclean has been recommended. I've yet to try it myself but I believe others have reported results varying from temporary success to Schlangeöl. ::)
Working out how to add it to my LPG tank, cos I'm blowed if I'm going to shell out 15 quid on snake oil and 30 quid on petrol to mix it with. ;D
Kevin
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Chris - what do you mean by regular pedal tricks? (I followed your pedal method to read the codes..)
Cheers
Ian
"Help" keep an eye on any other codes 0430 may mask by regular pedal tests. Sorry, poor wording.
So just to be clear, the eml/emissions/engine symbol is lit, and the car/spanner symbol is not lit?
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0420, 0430 codes are common on the 3.2 for reasons discussed at length elsewhere ... mine seem to come on every 4000-5000 miles ... quickly checked using the "pedal trick" then removed using the GS500.
I get the 0430 more than the 0420. I have a "slight" feeling that my fuel trims are a tad wierd, as looking at the "live data" they are noticeably different .. but I haven't yet learned what the figures actually mean !
(A little knowledge is a dangerous thing ???) ;D ;D ;D ;D
As an aside .. a usefull site for OBDII users ...
http://www.obd-codes.com/trouble_codes
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Chris - what do you mean by regular pedal tricks? (I followed your pedal method to read the codes..)
Cheers
Ian
"Help" keep an eye on any other codes 0430 may mask by regular pedal tests. Sorry, poor wording.
So just to be clear, the eml/emissions/engine symbol is lit, and the car/spanner symbol is not lit?
Confirmed - NOT the one with the spanner.
Just the engine one is lit.
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Not sure why the two links dont give the same text as i would have thought the only difference between the 2 would be left or right bank? But here they are anyway from Entwoods link.
http://www.obd-codes.com/p0420
http://www.obd-codes.com/p0430
If the lit symbol(engine) on dash only reads emissions, and nothing else, i would be very tempted to remove the bulb??? And do regular pedal test, as personally i do anyway as its so simple, to make sure nothing else has come up, goes unnoticed.
If the cat has broken up/collapsed/disintegrated then no amount of cataclean is going to help that, but if oil contamination or something similar then maybe...not likely tho as is a known issue.
My vote, wip the bulb out.
Are 3.0 litre cats the same?
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Not sure why the two links dont give the same text as i would have thought the only difference between the 2 would be left or right bank? But here they are anyway from Entwoods link.
http://www.obd-codes.com/p0420
http://www.obd-codes.com/p0430
If the lit symbol(engine) on dash only reads emissions, and nothing else, i would be very tempted to remove the bulb??? And do regular pedal test, as personally i do anyway as its so simple, to make sure nothing else has come up, goes unnoticed.
If the cat has broken up/collapsed/disintegrated then no amount of cataclean is going to help that, but if oil contamination or something similar then maybe...not likely tho as is a known issue.
My vote, wip the bulb out.
Are 3.0 litre cats the same?
No precats on a 3.0/2.5 and the problem is with the precats.
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Not sure why the two links dont give the same text as i would have thought the only difference between the 2 would be left or right bank? But here they are anyway from Entwoods link.
http://www.obd-codes.com/p0420
http://www.obd-codes.com/p0430
If the lit symbol(engine) on dash only reads emissions, and nothing else, i would be very tempted to remove the bulb??? And do regular pedal test, as personally i do anyway as its so simple, to make sure nothing else has come up, goes unnoticed.
If the cat has broken up/collapsed/disintegrated then no amount of cataclean is going to help that, but if oil contamination or something similar then maybe...not likely tho as is a known issue.
My vote, wip the bulb out.
Are 3.0 litre cats the same?
No precats on a 3.0/2.5 and the problem is with the precats.
Drill new/2nd sensor hole into 3.0 cat?
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I have fixed this on my 3.2 by doing this:
(http://farm4.static.flickr.com/3290/2915893351_a12d3f44b9.jpg)
Discussed on this thread.
http://www.omegaowners.com/forum/YaBB.pl?num=1214690650
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I get the 0430 more than the 0420. I have a "slight" feeling that my fuel trims are a tad wierd, as looking at the "live data" they are noticeably different .. but I haven't yet learned what the figures actually mean !
Sorry to dredge this up, but I also have a bit of a fuel trim imbalance. Does yours do it on petrol as well as LPG? Mine seems to disappear on petrol, although I haven't really spent enough time diagnosing it TBH. One of the LPG feeds to the injector blocks has the measurement tee in place and I was wondering if this is causing the imbalance.
Mine has about 10% trim one one side, and moninally zero on the other. Are you reading the trim as a percentage or a number centred around 127? Also, are you looking at both long and short term trims?
A fuel trim issue isn't necessarily connected to a cat problem. Assuming the trim is still in range you should have the same mixture going through both banks except when the engine is open-loop. Does make me wonder if one of the mixture control Lambdas is playing up though. :-/
Kevin