Member Since: 03 Nov 2018
Location: Rugby
Posts: 10
Engine management light on then off!
Hello one and all, I’m new to D3 ownership and the day after parting with a whole wedge of cash, the engine management light came on. It stayed on for a day and a half and then this evening as I started her to leave work, bingo, no light! Is this common, I had booked to have a diagnostic tomorrow (at a cost of just over £100) should I still keep this appointment or is this something that I just have to learn to live with?
3rd Nov 2018 1:03 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4666
If its driving fine I wouldn't worry too much about it. Possibly an EGR valve on the way out, the diagnostics should confirm!yµ (idµ - eAµ) ψ=mψ
3rd Nov 2018 2:38 am
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
Can be a rear O2 sensor playing up or if it occurred after a refueling, a known problem is the fuel cap. Undo it and redo it to three clicks, something about an air lock but not sure
3rd Nov 2018 6:22 am
Tazonsax
Member Since: 03 Nov 2018
Location: Rugby
Posts: 10
It was indeed about 10 minutes after fuelling. I did wonder if that could have been the problem. Thanks very much for the answers. Is there a known cure or is it something I will have to put up with
3rd Nov 2018 8:25 am
Mr Kington
Member Since: 12 Dec 2011
Location: Scottish Borders
Posts: 1549
Find a local Indy, £100 to plug it in is crazy. I pay£25 at my local garage. And that is more than enough to cover his costs. Clear faults, drive it a while and then get any new codes read. If you pay £100 every time then buy your own diagnostic tool for £300. Will save you a fortune long termJames favourite hobby is writing in the third person.
3rd Nov 2018 8:50 am
Tazonsax
Member Since: 03 Nov 2018
Location: Rugby
Posts: 10
If the light goes off on its own, does that mean the fault is cleared?
3rd Nov 2018 9:10 am
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
No, it means that a code has been entered and saved for future info and that the problem that triggered it has gone away. Does not mean it will not come back
3rd Nov 2018 9:30 am
Tazonsax
Member Since: 03 Nov 2018
Location: Rugby
Posts: 10
Had a bigger problem this evening! Driving along at about 65 had been doing that for about an hour or so) when we get a ping and an engine fault warning hi can’t remember he exact wording) it said suspension lowered and went into limp home mode with no power. On the dash it showed the suspension system warning and the DSC light came on.
I turned the ignition off and when I turned it back on the faults had gone, the suspension returned to normal height and we carried on our way. About 10 miles further it did it again. Ignition off then on and and all was good for about a mile. Ignition on and off again and she only gave us about 500 yards. We got recovered home and the recovery guy read the faults for us which were as follows
P0489 EGR CONTROL CIRCUIT LOW - HISTORICAL
P490 EGR CONTROL CIRCUIT HIGH - INTERMITTENT
P1623 IMMOBILISER CODE WORD /ID NUMBER WRITE FAILURE - PENDING
P045D EGR B CONTROLE CIRCUIT HIGH - HISTORICAL
P0087 FUEL RAIL/SYSTEM PRESSURE TOO LOW - INTERMITTENT
A friend of mine (no expert but a good home mechanic) seemed to remember there being a problem with a dodgy earth strap somewhere on the D3. He wondered if this could be a contributing factor.
My issue is that now the recovery guy has read and cleared the codes it appears to be fixed
Any ideas?
3rd Nov 2018 11:17 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
There was a noted problem with the "positive" lead from the alternator/starter going across the front diff and rubbing through causing a intermittent short. It is the lead that goes to the battery. There have been known earth connection problems and connector problems behind the battery box. I would also check the battery, should be above 12v, these vehicles are very computer orientated and require good power. Check output of alternator as well. The fuel rail fault could be indications of dirty filter or fuel pump on way out. As some are historical and some are intermittent I would check connections first.
4th Nov 2018 1:00 am
Bardley
Member Since: 02 May 2018
Location: Hertfordshire
Posts: 441
Best option here is to get your car plugged in to a diagnostic unit and read faults, incl. Pending faults.
The GAPII unit would be ideal for this, so see if a local member here is willing to help out.
As above, there are a mulititide of possibles, and you'll be shooting inthe dark by just changing parts out.2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.
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