Discovery 5 Engine management

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
sierrafery said:
I dont think so but even if you can it would be extremely expensive as the vehicle to pass MOT after that, according to the code's description which i posted it can be a wiring issue on that path which needs some troubleshooting or that particular injector which is not a killer https://www.lrparts.net/lr134710-ad...rt-l494-discovery-5-and-defender-2020-on.html so better go on that path and get it fixed, you need a good auto electrician who knows what to do and can access the diagrams
Click to expand...

hi mate

also think that with regards to the adblue , also heard if runs out there is some sort of procedure u have to go through , one post was where it was cured after removing the fuel cap, clearing the codes then refitting the fuel cap , others were getting the live data on both DPF sensors , IE- differential readings between them

like ur good self the only thing I’ve found out regarding that code is the following

ps, hope ur keeping well


What the P2047 code means
The P2047 code means a fault is present in the reductant injection valve circuit, bank 1 unit 1. The reductant injector is used to reduce emissions gases exiting the exhaust by injecting either air or chemicals depending on the usage and vehicle. When the ECU detects the fault in the reductant injector circuit, it will set the P2047 code and the Check Engine Light will be displayed on the dashboard.

What causes the P2047 code?
  • Poor electrical connection
  • Open or short in the reductant injector circuit
  • EGT sensor failure
  • Exhaust leaks
 
hi @NFIN06

just had a thought , has anyone physically checked ur catalytic converter and associated wiring underneath the disco please just in case someone has tried to nick it or the wiring is faulty etc plse , just curious that’s all

May I also ask have u got a multimeter plse , thks
 
Hey gstuart, nothing has been checked underneath at all tbh. Just got plugged in at this stage.

yeah have multi meter here
 
NFIN06 said:
Hey gstuart, nothing has been checked underneath at all tbh. Just got plugged in at this stage.

yeah have multi meter here
Click to expand...

Many thks, it was just a thought in case someone had been messing around underneath with the catalytic or the wiring , also seen where wires can get damaged / disconnected etc or theft

Of course ramps would be ideal if u have some , plus not wishing to sound rude but plse don’t ever get under these discoveries without using axle stands

that’s great you’ve got a multimeter as wondering if u would like me to send over a canbus testing sequence that can be done via ur OBD2 socket

will also check if u wish me too if that Autel AP200 diagnostic scanner may work on ur system, seeing there only £60

plus hope this is being helpful to u
 
Will check underneath this morning. Thinking of buying a set of ramps to have tbh.

just read up on that autel diagnostic tool. Looks impressive and would be great if it was compatible for only £60!!!

not sure how to carry out the canbus reading. Not going to let in that u know.

thanks for help on this. Much appreciated
 
Took a quick look underneath. No messing around with cat etc. def injector really easy to access. Wondering should I check wiring and perhaps unplug and see if it is blocked??
 
NFIN06 said:
Quick question. Can you map adblue system out completely??
Click to expand...

Yes, but I reckon the hardest bit will be finding someone who can do it, the yanks call it losing weight!
I would hazard a guess with a gutted system, emissions will be impossible to pass?
 
NFIN06 said:
Took a quick look underneath. No messing around with cat etc. def injector really easy to access. Wondering should I check wiring and perhaps unplug and see if it is blocked??
Click to expand...
Unplug the injector and measure resistance across it's pins, if you get open circuit you found the problem, unfortunately i dont know what resistance should have a good one but if it's open then it's clear and you'll fix it quite easy by replacing it. If it's not open then the circuit must be checked and that's not so easy cos you need the diagrams and connector views... these are available on Topix if you have paid subscription
 
Update: got a proper look underneath. Took injection out and a lot of crystallization inside - see image below. Also notice bare wire on lead on connector to injector.

took injector out, cleaned. Also cut wire, rejoined, soldered and re wrapped with heat proof tape…

All adblue lights out nearly instantly. Engine management light still on but got my mate to turn off so we will see how long it stays off
 
NFIN06 said:
Can’t upload photo for some reason. Says I haven’t permission
Click to expand...

hi mate

that’s awesome and over the moon for u , ref pictures if u copy the picture then paste it into ur thread , that’s for iPad or phone

bet ur well chuffed the lights went out and indeed as u say ur mate with a suitable scanner should be able to clear everything

look forward seeing the pictures , many thks

,
 
sierrafery said:
Unplug the injector and measure resistance across it's pins, if you get open circuit you found the problem, unfortunately i dont know what resistance should have a good one but if it's open then it's clear and you'll fix it quite easy by replacing it. If it's not open then the circuit must be checked and that's not so easy cos you need the diagrams and connector views... these are available on Topix if you have paid subscription
Click to expand...

massive credit to u mate , , sorry for the daft question but is it just one of the normal engine block injectors or a special one please , many thks and hope didn’t mind me asking
 
upload_2022-12-31_18-19-38.png
 
Last edited:
Thanks all for your help and guidance with this. Just one other issue to sort now. Misty, rear camera . Seen error on fault readings on diagnostics. Wonder should I just source a replacement on eBay and swap over???
 
Just found this , alas know it’s not on a D5 but assume the principle is the same

 
Last edited:
You must log in or register to reply here.

Similar threads

A
Disco 4 (LR4) Help please
2 3
Replies
52
Views
4K
Awgodsall
A
N
Disco 4 (LR4) Disco 4 tdv6 keeps going in to engine fault
Replies
8
Views
706
Neald
N
N
Disco 4 reverse camera not showing
Replies
2
Views
2K
Nick0207
N
B
Disco 2 Xyz switch? Cranks but won’t start.
Replies
9
Views
661
Bilbobagend
B
D
Discovery 4 battery/immobiliser fault
Replies
0
Views
899
Daz22
D
Back
Top