E55amg/FD3S

Anyone here with FF headers getting the check engine light due to code P2098?
If so, how did you fix the problem? My setup consists of headers along with 200 cell race cats. to stock mufflers. Thanks for any input!

Hammer Down

What does that code mean? Is it an O2 sensor code?

chiromikey

what tune are you running?

E55amg/FD3S

Post cat. lean. Eurocharged tune. Car runs good. Code started popping up after about 2 months from initial retune. Was told maybe it's the way the 02 wires were extended. Strange thing is for the first few months I never got a code.

Hammer Down

It could be the extension of the sensors

chawkins2001

I have that setup with no cats, and been code free for a few months. I also got a new toon to go with the headers.

chiromikey

might be a tuning issue or as simple as an o2 sensor going bad. i never have and never will buy into the whole issue about extending wiring to the o2 sensors being a problem. i ran extended sensors for 3yrs and never threw one single cel until i got a tune from renntech.

E55amg/FD3S

Thanks for all the replies! I'll take a look at the condition of the rear O2's.

jmb614

Did you ever get this resolved? I also have a EC tune with this code and MBH headers. The code popped less than a week after having the headers installed.

I've installed new O2 sensors and had the connections soldered, (which isn't the easiest to do with silver core wire), checked for exhaust leaks (none) and had 90 degree bung extenders installed. The one common denominator that I have seen on the forums is the EC tune.

Is anyone else experiencing this issue? Appears I have hit a wall with this, anyone else have an idea before I place a piece of black tape over the check engine light.

xpl0sive

procedure posted in the other thread....

Secondary O2 can be turned off and you can take them out with star diag, development data, control unit adaptation, variant coding, implizite codierung... item nb 183.

adianaty

Mine does it as well but I have an OE tune so I don't think it is tune specific given that OE has a number of customers with no problems using floored fab. I'm going to check my wiring again since i get it for both sides P2096/P2098. My secondary O2 sensors are off within my tune but I'll try and do it in Star as xpl0sive describes...

jmb614

Please let me know if that works. If so I'll have to locate someone with Star or ship the ECU off to Kleeman.

gaspam

i had this problem after getting long tubes installed and it turned out that the shop installed the upstream and downstream sensors in reverse... once i swapped positions the codes went away and have been gone since.

https://mbworld.org/forums/w211-amg/...t-problem.html

jmb614

I thought about that too after reading your thread when the code started popping up after the header install; but I verified a few days ago that they are connected correctly.

chiromikey

i went back to my original kleemann tune and have not seen an o2 code since! it's definitely tune related...

komp55

I'm running MBH long tubes and cats with an OE tune. Downstream sensors are extended and on. No CELs, no issues.

vipermike

I'm also running MBH long tubes and no cats with an OE tune. I had the down stream o2's turned off, no issues...

MikesE55

I am looking for a Floored fab Header system for My E55 with High flow cats and x pipe

chawkins2001

PM sent, I will sell you mine

Zod

U interested in a full FF used set made from SS?
Requires shipping Over seas though

ahmad0658

Can you pm me how much, I have one friend in kuwait who is looking for some LT.

I Like Soup

I have Floored Fab long tube headers and after a couple of months, yep, CEL.

305-E55

+1,Prefer without cats if possible..

jmb614

After spending close to $500 diagnosing the code, I had the car re-tuned and it went away.

MikesE55

I would be ,what is included in the system and how much are you asking for them.