Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
Restricted Performance + odd fault codes
Had restricted performance come up twice today - 3 or 4 miles into an outward journey and the same 4 hours later on a return journey. Cleared both times on restart. No other indications, warnings, malperformance, noises, smells or anything. LRA have left puzzled. Codes are P2279, P2BAE and P0494. Going into Guy Salmon Portsmouth tomorrow but wondered if anyone had received similar codes?
Any info appreciated. Thanks.
5th Aug 2018 6:46 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
I think that might be an intake air leak or restriction resulting in exhaust emissions degenerating! If so shouldn't be a big problem so long as inlet manifold is not cracked.
5th Aug 2018 8:37 pm
Philip1972
Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072
Mine was a hole in the cross over pipe. Not sure how new yours is,mine is a 2011.
5th Aug 2018 8:43 pm
UffBrock
Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
Those are two promising replies thanks. Hope it's not a blown manifold though! It's really puzzling that it happened both times just a short distance into a journey and then didn't repeat. We'll see tomorrow perhaps. As usual these things happen at the least covenient time - in this case on holiday with grandchildren and with a caravan to tow back home.
Thanks again
5th Aug 2018 8:53 pm
UffBrock
Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
OK, the problem appears to have been that the intercooler intake plenum was incorrectly fitted (at manufacture?). That has been correctly positioned and all seems well.
10th Aug 2018 6:00 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
Result yµ (idµ - eAµ) ψ=mψ
10th Aug 2018 6:03 pm
UffBrock
Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
Spoke too soon. Problem repeated on A34 yesterday - this time with tin tent on the back. Same P2279 error code and this time a persistent one. Recovered by LRA/AA/their sub-contractor from Southampton after 3 hours sitting by the side of the A34!!!! The recovery driver was brilliant but the communications between LRA, AA and the sub contractor involved were appalling.
Back to dealer today - this time my local one.
Now officially, and by a huge margin, the most troublesome car I've ever owned (and, sadly, I'm going back 50 years here).
15th Aug 2018 9:20 am
Philip1972
Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072
Keep us updated, will be interesting to know what the issue is.
15th Aug 2018 9:28 am
Browny90
Member Since: 19 Jul 2016
Location: Ashbourne
Posts: 687
PROFSR G wrote:
I think that might be an intake air leak or restriction resulting in exhaust emissions degenerating! If so shouldn't be a big problem so long as inlet manifold is not cracked.
I recently had a cracked inlet manifold and was P1247 Disco4 MY16 SDV6 Landmark Black
Disco4 MY12 SDV6 XS Orkney Grey (Gone)
Defender 90 200tdi Completely rebuilt.
15th Aug 2018 9:34 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
UffBrock wrote:
Spoke too soon. Problem repeated on A34 yesterday - this time with tin tent on the back. Same P2279 error code and this time a persistent one. Recovered by LRA/AA/their sub-contractor from Southampton after 3 hours sitting by the side of the A34!!!! The recovery driver was brilliant but the communications between LRA, AA and the sub contractor involved were appalling.
Back to dealer today - this time my local one.
Now officially, and by a huge margin, the most troublesome car I've ever owned (and, sadly, I'm going back 50 years here).
It'll be interesting to see what codes they come up with this time. Hope the manifold is OK, but if its the same codes I'd suspect there is an air leak / burst pipe on the intake / turbo side.yµ (idµ - eAµ) ψ=mψ
15th Aug 2018 12:56 pm
UffBrock
Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
Don't know about codes yet but the car has been inspected this morning and I've been told that the 'O' ring around, I assume, the exit from the plenum chamber, had been split when it was repositioned. Very fortunately, a replacement was immediately available and is to be fitted so that the vehicle can be made available today.
I've been surprised just how this experience has undermined my confidence in the car. I suppose a contributory factor was that only 10 mins before having to stop on the A34, we'd paused briefly at Sutton Scotney to hand back two grandchildren to their parents. Otherwise, I can't see how we'd have avoided being stuck for 3 hours by the side of a busy road with the two of them. Scary.
17th Aug 2018 10:43 am
B16 KJR
Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005
I had something similar a couple of weeks ago but after the second 'restricted performance' message it threw up an engine management light and got recovered to LR Perth where they discovered a loose air intake pipe ?
Upshot was they replaced both an air intake elbow and the throttle body.
17th Aug 2018 10:50 am
dgardel
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
P2279 is related to the inlet circuit
P2BAE is related to DEF system
P0494 to the viscous fanDiscovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition IID Pro MV License
17th Aug 2018 5:49 pm
UffBrock
Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156
Well, it seems that every cloud does have a silver lining. I duly collected the vehicle with the air intake pipe from the intercooler correctly located and sealed. I've done a few miles since and it seems as if I'm driving a different car.
I originally took delivery of the car back in August 2016 in replacement for a 2011 6-speed auto D4. Almost immediately I started to notice what I interpreted as a gearbox issue – i.e. the gearbox seemed reluctant to change down automatically when the engine came under a gradually increasing load (e.g. ascending a long hill). As a consequence, the engine would start to struggle. I flagged the issue up to the dealer and even spent an hour out road testing with their master technician but was assured that all was ‘normal’.
Since the latest breakdown and fix however, an improvement in performance has been really noticeable. In particular, the ‘gearbox’ issue has completely disappeared.
What I'm now suspecting is that this intake pipe was incorrectly fitted at manufacture, that there has always been an air leak which, though insufficient to trigger any ‘implausible signal’ error codes, was sufficient to slightly reduce engine power – to an extent that became obvious only when the engine came under load. Only when vibration etc. shifted the pipe a bit more did the leak increase, an error code generate and the ‘restricted performance’ message appear.
The flaw in this theory is that, if this was the case, surely the problem that I thought was a reluctant gearchange would have been glaringly obvious to an experienced LR technician used to 8-speed D4 performance as a restricted power issue?
Whatever, my dented confidence in the vehicle is being displaced by a developing permagrin.
Thanks again for all contributions to my original query.
1st Sep 2018 4:14 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
Great, hope you keep the smile yµ (idµ - eAµ) ψ=mψ
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