Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
  
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| EGR fault after manifold replacement? |
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So upon picking up my D4 following the manifold replacement last week, I'm now consistently getting two EGR errors.
P045C-00
Description: Exhaust gas recirculation B control circuit - Low
P045B-19
Description: Exhaust gas recirculation B control circuit - Range/performance
Neither of these occurred before the manifold work and I have the historical scan to prove that. The tech is saying it is a historical fault that is unrelated to the manifold work. Given that the manifolds are on the inlet side of the engine and EGR on the outlet, I'm inclined to agree with them that it is unrelated. However, it's a hell of a coincidence that it first occurred when I picked the car up, and is consistently faulting on most journeys now.
Is it likely that replacing the manifolds would have somehow resulted in damaging the EGR or otherwise affecting the flow through it (as the fault description seems to indicate)?
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 23rd Aug 2021 11:02 am |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6308
  
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Have they connected everything backup, the B circuit is the butterfly side of things, Is the Throttle body located fully and correctly fitted.
Flack 
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| 23rd Aug 2021 4:10 pm |
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beerbelly
Member Since: 07 Sep 2020
Location: teesside
Posts: 87
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who did the inlet manifold
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| 23rd Aug 2021 5:21 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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North East 4x4.
I’ll be going back to them to get it looked at this week. They know about the issue since I had them clear it before I left last week, but I wasn’t happy that they tried to brush it off as an unrelated ‘historical’ fault.
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| 23rd Aug 2021 6:30 pm |
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beerbelly
Member Since: 07 Sep 2020
Location: teesside
Posts: 87
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no i dont blame you i have has good experience with them but i have spoken to friends who are not so keen to go back there and prefer oakfields in thornaby . i have had good experiences at both places
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| 23rd Aug 2021 7:02 pm |
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N5Fav
Member Since: 28 Jan 2021
Location: LEICESTER
Posts: 134
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Is there a possibility that the manifold failure was causing more soot in the exhaust, and that this is what has jammed the EGR, so directly related to the original fault, but not the repair. 1994 Defender 300tdi 110 commercial
2007 Disco 2.7 XS Buckingham Blue
1959 Standard 10 Coffe & Cream
1974 Vauxhall Magnum 1800 estate Olivine Starfire Green
1994 Renault 19 Cabrio
1995 Kawasaki GPz 1100
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| 24th Aug 2021 12:14 pm |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6308
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You can tell if the egr's are moving, just recycle the ignition and watch to see if both actuators move on each egr, they should do a cleaning cycle.
Flack
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| 24th Aug 2021 12:54 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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Well, took it back to them this morning. One of the co-owners was in the office, so he came out personally and tackled it.
Everything seems to be connected up properly.
Both valves actuate and run the cleaning cycle.
We had the battery out and checked connections in the run from the EGR plug to the ECU.
All seemed fine. The only part he couldn't get to ad hoc was some other wires that are behind/above the engine that required a bit more dismantling. I needed to book it in for the EPB service anyway, so they will have a look at that then.
On the way home, no recurrence of the fault, so it may be that just unplugging and reseating the connections was enough to fix it. Time will tell...
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| 25th Aug 2021 11:12 am |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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After a day of driving around with no faults, lulling me into a false sense of security, we're now back to square one with this. Feels almost like something is working its way loose as it warms up, but all plugs and other connections were seated securely.
Doesn't seem to be impacting driveability, so it's going to have to wait until it goes back for the EPB.
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| 27th Aug 2021 12:15 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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Well, they've had it back today, and have been unable to find any breaks in wiring. They think it might be the solenoid inside the valve, and so have ordered a replacement EGR which they will check before installing. The fault has been very consistent since it started last month, to the point where clearing the codes has become part of my start-up procedure, just so I don't have to look at the bloody check engine light for the whole journey.
EGR replacement sounds like it is potentially quite expensive, and given that this fault did not occur until they replaced the manifolds, we're in for an interesting conversation tomorrow, I think. Is it just bad luck/coincidence? I know the solenoid was working the valve, as we could hear it when I first took it back to them. At this point though, I just want the bloody thing fixed.
I ended up taking it to Les Potts to do the EPB, as the MOT crept up on me and they were the only people remotely local with availability to do it. Had a great experience and will likely use them again, even though they're a lot further away.
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| 23rd Sep 2021 4:06 pm |
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beerbelly
Member Since: 07 Sep 2020
Location: teesside
Posts: 87
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your not having much luck with this car i hope you persevere as they are worth it when you finally get on top of them . i didn't know about less potts let us know how you get on with them as we seem to have a shortage of decent land rover independents in Teesside
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| 23rd Sep 2021 4:59 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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I came into it knowing there would be some maintenance and other stuff that would crop up. Be nice if it hadn’t all hit in one month though…
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| 23rd Sep 2021 6:33 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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Solenoid in the EGR failed. So the valve was cycling, or trying to, but not fully operational. Hence throwing the code every time.
Maybe I'm too generous, but I'm inclined to think it was bad luck/coincidence that it happened while they were doing the manifolds.
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| 24th Sep 2021 3:38 pm |
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Minemapper
Member Since: 28 Apr 2021
Location: Yarm
Posts: 92
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And the sodding code is back. 🤯
Time to take it somewhere else. These guys are just chucking parts at the problem.
If anyone here has any ideas, they would be very welcome….
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| 26th Sep 2021 7:38 am |
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McZuk
Member Since: 11 Mar 2020
Location: Oltedal
Posts: 16
 
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Tune out the egr and fit blanks.
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| 28th Sep 2021 10:20 am |
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