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Discussion Starter · #1 ·
Hi. My wife’s 2014 Evoque 2.2 D (60k miles), is intermittently throwing a P0403 error code - EGR vacuum Control solenoid. Before I book it in for a fix, can anyone point me in the direction of where I can locate this part on the engine so I can check its not just a bad electric connector, split hose etc... It also eventually gives code P0405 - EGR sensor, and will go into limp mode, but I guess the root cause is the P0403 fault as this always appears first. Had a new battery recently so shouldn’t be a low voltage issue.

Anyone fixed this themselves other than have a garage replace parts? E.g diagnose and clean rather than replace. Is fitting a new EGR solenoid a DIY job or one to leave for the experts?
 

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Dynamic 3 door, 2013, SD4, santorini black with pimento and ebony
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Hi, the EGR valve can fail in several ways, it can get blocked or it can fail electrically inside and the solenoid does not move correctly. That is what happened to mine. I can’t remember the exact codes but there were a couple of P040* that would come up, disappear when cleared and re appear a little later.
A good EGR like Pierpoint who make OEM ones can be had for £150. The difficulty is DIY fitting, the valve fits to the EGR cooler, but can’t be unbolted as the last bolt is inaccessible so it needs the coolant draining and the cooler /EGR valve removing as a unit then splitting. (The cooler can also leak causing the EGR failure but mine was good).
The whole assembly is on the rear of the engine, passenger side in the small space between the head and the bulkhead.
I had a look at DIY replacing it but entrusted it to a local Land Rover specialist. Once I give them the codes they told me straight away it was an EGR failure and needed replacing. They said they do a lot and you need arms like Mr Tickle and a lot of patience.
I paid them £650 in total including the part and VAT.
On reflection I am glad I did not attempt it on my own. A year later and all is great.
I can recommend Maltings 4x4 on the South Yorkshire/Nottinghamshire border. Not the cheapest but have JLR diagnostics and did me a full software upgrade whilst it was in which was a bonus.
Edit- the air path needs re calibrating after a new EGR valve I believe.
 

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Discussion Starter · #3 ·
Thanks Binty - Think I’ll take it to my local independent LR specialist then. Guess you mean Pierburg rather than Pierpoint? Hopefully only needs EGR and not the EGR cooler replacing.
 

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Spock - MY20 D180 Evoque R-Dynamic SE Santorini Black Pimp-Wagon!
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Get it mapped out electronically then disconnect. Will be cheaper and give better fuel economy. These devices only work well in new clean engines but they cause more trouble than they are worth. With the remap you could get more power at the same time should you wish. About £300 ish. (y)
 

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Dynamic 3 door, 2013, SD4, santorini black with pimento and ebony
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Thanks Binty - Think I’ll take it to my local independent LR specialist then. Guess you mean Pierburg rather than Pierpoint? Hopefully only needs EGR and not the EGR cooler replacing.
😂😂😂 Absolutely Pierrepoint was the hang man. 😂😂
 

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Discussion Starter · #6 ·
Thanks for replies. So seems there are 2 options - replace EGR valve at cost of £650+ or get remapped to ignore EGR and blank off in some way at less cost. Not interested in improving performance. Has anyone actually gone down the road of remapping the ECU and blanking off the EGR? Would love to hear how it went.​
 

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Discussion Starter · #7 ·
Quick update - Before getting the EGR valve replaced, I decided to try a bottle of Archoil AR6400 Max engine cleaner. It took 3 weeks to burn through 3/4 of a tank of diesel but then the stuff seems to have worked - no more error codes or limp mode. Now after 2 months and around 1000 miles, still no problems. Not sure how long this will work for given the frequent short journeys this car takes, but worth a try at £24 rather than £700 for a new valve. Fingers crossed it will be ok for at least a few more months.
 

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Add some of the fuel treatment at fill-up every now and then Archoil 6900D, I use it in mine, not every fill, and bi-annually put the cleaner through it when doing a long run.
 
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