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Home > Technical (L322) > Restricted Performance Warning & DPF Full amber light

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Fox889

Member Since: 04 Jun 2019
Location: Bury St Edmunds. Suffolk
Posts: 683

2012 Range Rover Westminster TDV8 Orkney Grey

Have to say, 3000rpm ain’t the way to go for a regen old matey.
Gentle amble at 55-65mph, 1150rpm, in top, on cruise & she’ll be fine, try that & see if it helps? 2012 Orkney Grey Westminster 4.4TDV8 with Ivory interior.........nice!
Alfa Romeo Giulietta
Just one Montesa now, 349 White Wonder
Austin A40 Farina MK2
1975 Morris Marina 1.8TC

1st Apr 2022 7:18am

Dolphinboy

Member Since: 07 Dec 2009
Location: Bristol
Posts: 3139

2015 Range Rover Autobiography SDV8 Baltic Blue

@Jaygee

I disagree that a leak could cause this situation. My DPF yellow and red faults were caused by a minute crack in the pax inlet manifold which only gave RP on occasions but then filled the DPF. They couldn't find it at first but a HIGH pressure smoke test did the job.

I only have very limited mech knowledge and you seem to have good mech background so I will defer if required.

1st Apr 2022 11:07am

Dolphinboy

Member Since: 07 Dec 2009
Location: Bristol
Posts: 3139

JayGee wrote:
some other system or sensor fault is stopping it going into an active regen and this will only be revealed when you get it scanned.

The reason why mine wouldnt regen was the thermostat housing had been damaged by a previous garage and so the engine (which runs very cool anyway) couldn't reach the temp for a regen to take place - it would initiate (sometimes thousands of attempts an hour!) but never complete, due to the internal engine temp being too low as the thermostat was open all the time.

1st Apr 2022 11:11am

JayGee

Member Since: 27 Jul 2021
Location: London
Posts: 3203

2012 Range Rover Vogue 4.4 V8 Orkney Grey

Specific experience is worth more than general mechanical experience on these cars so happy to be corrected 2012 TDV8 Vogue (L322)

1st Apr 2022 11:13am

Crusty21

Member Since: 29 Mar 2022
Location: Cheshire
Posts: 16

2011 Range Rover Vogue SE 4.4 V8 Santorini Black

MUCH APPRECIATE ALL THE HELP GUYS!

It seems that from people's experience on here that there is a hole load of issues that could cause the specific problem so the vehicle is now booked in for a scan so the garage can sort it out

When I get the results back I will post here so that it may help somebody out in the future

Incidentally, took it up the M57 this morning to see a client and after just 10 miles @ 70mph the DPF amber warning light went out again
That's 4 times this week ..... warning light ON ...... motorway run ..... warning light OFF ...... and REPEAT
It's all a bit Groundhog Day
KR
Neil 2011 TDV8 4.4 Vogue SE

1st Apr 2022 11:27am

Baltic Blue

Member Since: 13 Aug 2015
Location: North Wales
Posts: 3765

2011 Range Rover Vogue SE TDV8 Baltic Blue

Many owners have reported cracks and hose slits so minute that they didn’t show up on low pressure smoke tests, but gave all these DPF warning problems, yet as soon as located using a high pressure smoke test, no further problems.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

1st Apr 2022 11:42am

GGDR

Member Since: 26 Nov 2016
Location: London
Posts: 3542

2011 Range Rover Vogue SE TDV8 Stornoway Grey

9.5 times out of 10 it is a boost leak

. Cheers, Greg
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2011 Vogue SE 4.4 with lots of toys in Stornaway

1st Apr 2022 12:03pm

Dolphinboy

Member Since: 07 Dec 2009
Location: Bristol
Posts: 3139

Crusty21 wrote:
MUCH APPRECIATE ALL THE HELP GUYS!

Incidentally, took it up the M57 this morning to see a client and after just 10 miles @ 70mph the DPF amber warning light went out again
That's 4 times this week ..... warning light ON ...... motorway run ..... warning light OFF ...... and REPEAT
It's all a bit Groundhog Day
KR
Neil

slightly leftfield, but have you checked the sensors on the exhaust pipe (ie before and after the exhaust box) are situated correctly, i.e not lose or dislodged slightly, ad not fouled/dirty. It may only be one of the sensors there needs replacing. the IID tool will tell you the voltage emanating from each sensor so have a gander at that.

1st Apr 2022 2:54pm

Range Rover L322

Member Since: 03 Sep 2019
Location: South West
Posts: 329

JayGee wrote:
An intake leak big enough to cause excess soot via overfueling would throw an engine fault which is easier to identify with a fault scan than a high pressure smoke test IMO. Getting fault scan is the first and main priority.

Apologies for contradicting you but this is not the case.
The majority of leaks will give a DPF Full warning but no engine fault. High Pressure smoke test always the first stop and will find it in 90% of cases.

. 2012 L322 4.4 TDV8 AB low mileage - a peach
1986 V8 Defender 90 County ex-Swiss Army - Red everything....

My preferred Independent: Roy Hardy. R & B AUTOS LTD, 20 Brook Road, Wimborne, Dorset, BH21 2BH 07500 866775‬ (Ex LR Chief Technician)

1st Apr 2022 9:55pm

JayGee

Member Since: 27 Jul 2021
Location: London
Posts: 3203

No need for apologies as happy to be fully corrected on this one. 2012 TDV8 Vogue (L322)

2nd Apr 2022 7:11am

Smitch

Member Since: 05 Oct 2021
Location: North west
Posts: 40

2012 Range Rover Westminster TDV8 Stornoway Grey

I went through a lot of pain with this issue.

If the short hoses are leaking it’s usually from underneath so loosen the clips and spin them, you will see a distinct sooty deposit on the clip as a tell tale sign.

Click image to enlarge

The intake hose can be fixed by tightening the clip, however, I’ve seen a good few now where the leak is actually coming from the sensor housing on the pipe (this looks like the area you had a lot of build up)

This was mine

Click image to enlarge

4th Apr 2022 7:10pm

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