RESOLVED: 4011 Exhaust back pressure sensor....
Hi all,
Did a check on my E60 LCI 520D (N47) this morning in ISTA-D, came up with a bunch of codes - most of which cleared fine. The one which seems to be persistant is: 4011 DDE: exhaust back pressure sensor before particulate filter, signal I replaced the exhaust back pressure sensor (in the engine bay, on the side of the engine) in November 2019. I'd be surprised if the sensor I replaced has failed once again in such a short space of time. Can't seem to find alot of info on error 4011, so am wondering if it is the sensor I replaced (in the engine bay, on the side of the engine), or is it a different sensor ? Thanks, Vaughn. |
Is this error causing some noticeable performance degradation?
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To be honest, I've not noticed any performance drop really.
I did get an EML and limp mode activated a month or so ago, but whilst I was on the same journey as said EML and limp mode activation appeared - both went off, since then nothing has re-appeared on the dashboard. I was just a bit concerned as to much back pressure can cause turbo problems, and maybe prevent a regen to ? |
My car never has 0 errors when scanned. If it gets up on it when I need it to, I'm not too overly concerned.
If you suspect a looming issue, you usually have to wait until it gets a bit worse in order to accurately diagnose it. |
As I scan my car reasonably regularly, I know this is a new code which has appeared in the past few months.
There's only a few sensors pre-DPF by the looks of things, maybe I'll remove one by one, and test for resistance/short circuit. |
For anyone having this issue in the future.
In order to resolve this error, I simply replaced the exhaust pressure sensor. Error cleared in ISTA-D immediately. |
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