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scuddriver



Member Since: 12 Feb 2015
Location: Dunbar
Posts: 138

United Kingdom 2011 Range Rover Vogue 4.4 V8 Java Black
P040D-00 (2F) EGR Temp Sensor A Circuit High - what to do?

I have had this fault code come up for a while now, and searching the archives it appears I am not the only one. It has been raised before, but in a thread whose main topic is warranty claims:
http://www.fullfatrr.com/forum/post486036.html#486036

So to give this some proper exposure, does anyone have a definitive answer on whether this fault can be safely ignored? There are clearly different variations on EGR Temp Sensors faults, some more serious than others. Some warn that this can lead to overfuelling and the DPF filling up. I have had only one instance of the DPF requiring regeneration, and that was a year ago. I have just done 500 mile round trip where the car performed perfectly and returned 33 mpg, so I don't think it is overfuelling.

So what do we think? Ignore it?

Click image to enlarge
 2011 Vogue TDV8 4.4
1992 Mazda Mx5

Post #486039 14th Aug 2018 7:30am
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GraemeS



Member Since: 06 Mar 2015
Location: Wagga area
Posts: 2278

Australia 2012 Range Rover Autobiography TDV8 Bournville

Have a read of this thread, particularly from page 4.
http://www.fullfatrr.com/forum/topic48131-45.html

Post #486041 14th Aug 2018 8:04am
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cass



Member Since: 12 Oct 2011
Location: northumberland
Posts: 692

United Kingdom 2014 Range Rover Autobiography SDV8 Causeway Grey

My view is to leave it alone, mine has had this code since I bought it, I’ve done 40K miles and never had a DPF issue so is it linked?
Mine has had the turbo drain mod done so has this had an effect on the DPF?
It seems to me that there are so many variables associated with DPF problems (with all diesels) that it is almost impossible to pin it down to a sensor.
After saying all this I would probably think completely differently if I was having a problem

Post #486052 14th Aug 2018 9:38am
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scuddriver



Member Since: 12 Feb 2015
Location: Dunbar
Posts: 138

United Kingdom 2011 Range Rover Vogue 4.4 V8 Java Black

Many thanks. I had missed the other thread. I think I will leave well alone unless I start getting problems. 2011 Vogue TDV8 4.4
1992 Mazda Mx5

Post #486081 14th Aug 2018 1:55pm
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GGDR



Member Since: 26 Nov 2016
Location: London
Posts: 3517

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Found this in the workshop manual:



What I think many don't realise, as mentioned on the thread GraemeS has linked above is that this inlet sensor, called Sensor A is (probably*) on the manifold and not on the EGR. This is a long way from the EGR so at face value, you get an error on the EGR sensor, change the sensor (Sensor B) and the fault comes back. Why? The wrong sensor's been changed probably. Being Sensor B. This is not in all cases and my own theory.

But it may explain why many have tried to fix this, the fault's come back and anecdotal opinion seems to end up as "they all do that".

I'll be changing mine as I have DPF issues so I will prove - or disprove my theory. Pls see the thread GraemeS has linked above for updates.

*Sensor A or B's location is not documented (part of the problem) as far as I can see in the WM but there are several contributing factors to this including CTC's advice.

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

Post #486114 14th Aug 2018 8:01pm
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