Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
Restricted Performance
Hi all,
I'm currently in Perth, one hour into an 8 hour journey home and my D4 has just gone into limp home / restricted performance mode, with a red (not flashing) warning light.
The dealer in Perth is too busy to look at it and the warning has gone out after restarting the car.
Seeing as it's not warning me at the moment, does anyone have any thoughts as to whether it's sensible to continue driving? Worried that a breakdown recovery person will simply say there's no fault at the moment...
Cheers,
AdeMY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 11:21 am
F355GTS
Member Since: 10 Nov 2008
Location: North Hampshire
Posts: 849
I'de drive it, ours did that, it cleared after restart, fault code suggested it was water in the diesel but it's never come backMark
22nd Feb 2020 11:23 am
Ade_S
Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
Thanks. Going to try it. Just driven through a lot of water / snow so hoping it's just a damp sensor connector...MY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 11:29 am
darrind
Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863
Any other symptoms like ABS coming on or suspension not raising?
I would check fluid levels and get some spare coolant water and oil in the boot, and see if you can find a good hill to take it up as if it’s a turbo problem it will show when you are going under load - any fluid leaks or extra noise from the cam covers to indicate a split in the plastic casings
Night be worth seeing if there is anyone nearby with an iid to check for errors recorded
Have you got tools with you?
If everything else seems fine I might be tempted myself to drive it home stopping frequently to check everything is OK
Sometimes it can be feedback from a sensor throwing up errorsMust stop buying shiny toys....
22nd Feb 2020 11:33 am
robpenrose
Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136
Re: Restricted Performance
Ade_S wrote:
Hi all,
I'm currently in Perth, one hour into an 8 hour journey home and my D4 has just gone into limp home / restricted performance mode, with a red (not flashing) warning light.
The dealer in Perth is too busy to look at it and the warning has gone out after restarting the car.
Seeing as it's not warning me at the moment, does anyone have any thoughts as to whether it's sensible to continue driving? Worried that a breakdown recovery person will simply say there's no fault at the moment...
Cheers,
Ade
When it illuminates, are you actually getting restricted performance? As in, is the car in limp mode?
Current: D4 HSE
Previous: BMW Z4M Coupe
Previous: Land Rover Defender 90 CSW Td5
Previous: Land Rover Discovery Td5 ES
22nd Feb 2020 12:02 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13879
Re: Restricted Performance
Ade_S wrote:
Hi all,
I'm currently in Perth, one hour into an 8 hour journey home and my D4 has just gone into limp home / restricted performance mode, with a red (not flashing) warning light.
The dealer in Perth is too busy to look at it and the warning has gone out after restarting the car.
Seeing as it's not warning me at the moment, does anyone have any thoughts as to whether it's sensible to continue driving? Worried that a breakdown recovery person will simply say there's no fault at the moment...
Cheers,
Ade
Split inlet manifold.New Defender L663 110 SE (known as Noddy!)
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
22nd Feb 2020 12:07 pm
Ade_S
Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
I've returned to wait for the RAC at Tesco's.
Just plugged in my OBD2 reader and it's saying
P006A – MAP – Mass or Volume Air Flow Correlation
Hoping that's not a split manifold as thats certainly not something they'll be fixing in the supermarket car park!MY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 12:19 pm
Ade_S
Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
Re: Restricted Performance
robpenrose wrote:
When it illuminates, are you actually getting restricted performance? As in, is the car in limp mode?
Yes, it's struggling to gst over 60mph and a lot slower on the hills...MY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 12:21 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13879
Ade_S wrote:
I've returned to wait for the RAC at Tesco's.
Just plugged in my OBD2 reader and it's saying
P006A – MAP – Mass or Volume Air Flow Correlation
Hoping that's not a split manifold as thats certainly not something they'll be fixing in the supermarket car park!
Same code for my split manifold. You might be lucky and find its a split intercooler hose.New Defender L663 110 SE (known as Noddy!)
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
22nd Feb 2020 12:24 pm
Andy500
Member Since: 27 Aug 2018
Location: Cheshire
Posts: 228
Same code for me and was a Manifold split. You can probably still drive it if you can reset the fault and go easy at least to get you home👍
22nd Feb 2020 1:03 pm
Ade_S
Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
The RAC chap says his diagnostics equipment is showing one MAF sensor reading very different from the other (almost zero bs 15 - not sure what units)
He's picking up a new sensor to try. Fingers crossed.MY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 1:26 pm
adam
Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6917
Happened to me - faulty MAF and a leaking intercooler hose joint - the latter took an age to find until Indy did a smoke test and voila!
Good luckNow Golf GTI PP, 7 speed DSG.
Ex D3 and D4
22nd Feb 2020 1:38 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20727
Ade_S wrote:
The RAC chap says his diagnostics equipment is showing one MAF sensor reading very different from the other (almost zero bs 15 - not sure what units)
He's picking up a new sensor to try. Fingers crossed.
That's normal on the 3.0
My money is on a split manifold. Lift the engine cover, and look under the injector soundproofing
Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90
MAF sensor swap hasn't fixed it. Sounds like I'll bre recovered back to the Midlands and my local indie can look at it.
Thanks for the advice, folks. I'll update this with the final diagnosis, for reference/ info/ interest.
AdeMY2012 D4 HSE in Siberian Silver, 1967 MGB
22nd Feb 2020 2:07 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13879
Get your indi to do a smoke test. If it is a split manifold, do both sides and prepare your wallet New Defender L663 110 SE (known as Noddy!)
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
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