EML Light..advice required
EML Light..advice required
Author
Discussion

Ollie2690

Original Poster:

3 posts

15 months

Yesterday (14:46)
quotequote all
Car EML on.

Two stored codes: U010B84: Communication with the Exhaust Gas REcirculation controller (cylinder bank 2) has a malfunction. There is a signal below the permissable value.

U040C08: Implausible data were received from the exhaust gas recirculation controller (cylinder bank 2). There is a signal fault or the message is faulty.

So far:

Cleared the codes: they come back on, not instantly but quickly
Garage has reset EGR values: code came back
Inspection at main dealer: Nothing found, wanted more time.

AClass W177 A200D.

any help appreciated with what the issue coudl be.

E-bmw

12,286 posts

175 months

Yesterday (15:09)
quotequote all
The BIG question is.........

Ollie2690 said:
Inspection at main dealer: Nothing found, wanted more time.
What does this mean?

It could mean they opened the bonnet & yes, there is an EGR installed.

Or it could mean a lot more.

Without knowing the answer I certainly wouldn't be able to help more than to say, perhaps it needs more than "an inspection".

paul_c123

1,876 posts

16 months

Yesterday (17:26)
quotequote all
Sounds like a wiring issue or a connector which is disconnected, or corroded. Or a power issue. Since the garage you took it to hasn't diagnosed it, it needs diagnosing properly. If its been to 2 garages and they haven't done it, I don't fancy my chances of bettering them by the owner posting a questions on an internet forum.

Ollie2690

Original Poster:

3 posts

15 months

Yesterday (19:46)
quotequote all
E-bmw said:
What does this mean?

It could mean they opened the bonnet & yes, there is an EGR installed.

Or it could mean a lot more.

Without knowing the answer I certainly wouldn't be able to help more than to say, perhaps it needs more than "an inspection".
They did diagnostics. Got the codes through the Merc system (I forget what it's called). They then wanted to test the electronics manually which I couldn't authorise at the time as I had a medical appointment and then they must've been pissed as I had a voicemail two days later telling me that we should go our 'separate ways', presumably because I hadn't rebooked back in yet.

I have made an appointment at another Merc dealer but I am curious.

Ollie2690

Original Poster:

3 posts

15 months

Yesterday (19:48)
quotequote all
paul_c123 said:
Sounds like a wiring issue or a connector which is disconnected, or corroded. Or a power issue. Since the garage you took it to hasn't diagnosed it, it needs diagnosing properly. If its been to 2 garages and they haven't done it, I don't fancy my chances of bettering them by the owner posting a questions on an internet forum.
Thanks. I had a look myself and there doesn't appear anything obvious to my eye.

I'm not sure why everyone is being a smart arse. I only asked for views.

E-bmw

12,286 posts

175 months

Ollie2690 said:
I'm not sure why everyone is being a smart arse. I only asked for views.
Who is this "everyone"?

You have had 2 replies from people who clearly know what they are talking about, asking perfectly reasonable questions that (when answered) make us stand a far better chance of helping further.

Guess what.

I'm out.