C63 AMG (W204) 2008 - 2015
Sponsored by:
Sponsored by:

How long have you left your CEL on?

Old Jun 9, 2011 | 01:45 PM
  #1  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Exclamation How long have you left your CEL on?

Ive taken my car in twice to get the CEL turned off but it just comes on again the next day the car doesnt do anything that would lead me to believe there is something detrimental going on that would cause future problems....so,

I was wondering if I should worry about it?

What is the longest that any of you have left it on?

And do any of you just not worry about it at all? If so, how long have you had the CEL on and has anything bad come of it?

My mods are listed below and the last time I took it in to the shop they said it had something to do with the cats but they found no problems with it. They just deleted the code.

Thanks
Reply
Old Jun 9, 2011 | 01:49 PM
  #2  
Yuille36's Avatar
MBWorld Fanatic!
Veteran: Marine Corps
15 Year Member
Liked
Community Favorite
 
Joined: Apr 2009
Posts: 6,020
Likes: 532
From: Alexandria, VA
07 E63 AMG, 10 C63 AMG, 07 E63 Designo, 07 E350, 09 C300, 07 C230
What is causing the issue in the first place?
Reply
Old Jun 9, 2011 | 01:53 PM
  #3  
ZephyrAMG's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2009
Posts: 4,438
Likes: 388
From: Relocated
2010 Irridium Silver MB C63 AMG Sedan
Dude, your car is new....wTf???
Reply
Old Jun 9, 2011 | 02:00 PM
  #4  
obsidian05e55's Avatar
MBWorld Fanatic!
 
Joined: Dec 2006
Posts: 3,278
Likes: 3
From: Livingston NJ
C63, Grigio Medio E46 M3
We should have a sticky of all the CEL occurrences. It seems these cars constantly throw codes.

Ive had one on for close to a month for the Purge Valve issue. Went to the dealer 3 times for it, and just kept lighting back up.

Now i randomly get one for Lean Bank 1. what is your code?
Reply
Old Jun 9, 2011 | 03:05 PM
  #5  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Originally Posted by Yuille36
What is causing the issue in the first place?
apparently it has something to do with the cat? thats what the shop said.


Originally Posted by ZephyrAMG
Dude, your car is new....wTf???
ya, but i modded it so i have no one to blame but myself at the moment tell i can figure out why the hell it keeps coming back on

Originally Posted by obsidian05e55
We should have a sticky of all the CEL occurrences. It seems these cars constantly throw codes.

Ive had one on for close to a month for the Purge Valve issue. Went to the dealer 3 times for it, and just kept lighting back up.

Now i randomly get one for Lean Bank 1. what is your code?
I agree with the CEL sticky because I did a search several times before I posted and came up with a little help but not much.

as for the code -- im going to have to ask the next time i take it in but like i said above, the shop said it had something to do with my new cats?

BTW -- my CEL has been on for about 2 months now :O
Reply
Old Jun 9, 2011 | 07:25 PM
  #6  
_AMG_'s Avatar
MBWorld Fanatic!
 
Joined: Jul 2009
Posts: 6,677
Likes: 4
From: Los Angeles
C63
Could be your 02 sensors.
Reply
Old Jun 9, 2011 | 07:57 PM
  #7  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Originally Posted by _AMG_
Could be your 02 sensors.
Possible but the codes indicate that its the cat which may be covered under the Kleemann warranty. Ill just have to take it back to the shop and find out. Thing is, I dont drive the car much and the shop is an hour away.

I was just wondering how many people said "f|_|ck it" and just got fed up and drove with the CEL on anyway lol.
Reply
Old Jun 9, 2011 | 08:01 PM
  #8  
Sonny@Marranos's Avatar
Former Vendor of MBWorld
 
Joined: Nov 2006
Posts: 124
Likes: 0
From: Sydney,Australia
E55,S500,C200 KOMP,SV300 ,LANDCRUISER SAHARA
Originally Posted by CELLryuu
Possible but the codes indicate that its the cat which may be covered under the Kleemann warranty. Ill just have to take it back to the shop and find out. Thing is, I dont drive the car much and the shop is an hour away.

I was just wondering how many people said "f|_|ck it" and just got fed up and drove with the CEL on anyway lol.

Take it back to your tuner and get it adjusted thru the ecu,its easily


regards sonny
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Jun 10, 2011 | 03:14 PM
  #9  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Ok, I took it back to the shop and the code read P0430

He said that we will keep working on the problem of a CEL but that nothing was going on that was harmful to the engine.

What is P0430 in your guy's opinions? (P0430 Catalyst System Efficiency Below Threshold (Bank 2)) Which side is bank 2?
Reply
Old Jun 10, 2011 | 03:17 PM
  #10  
PetroC63's Avatar
MBWorld Fanatic!
 
Joined: Aug 2005
Posts: 2,207
Likes: 2
From: North Jersey
2012 CTS-V
Originally Posted by CELLryuu
Ok, I took it back to the shop and the code read P0430

He said that we will keep working on the problem of a CEL but that nothing was going on that was harmful to the engine.

What is P0430 in your guy's opinions? (P0430 Catalyst System Efficiency Below Threshold (Bank 2)) Which side is bank 2?
1) The catalytic converter is no longer functioning properly
2) An oxygen sensor is not reading (functioning) properly
3) There is an exhaust leak

First, inspect for exhaust leaks.

Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.
Reply
Old Jun 10, 2011 | 03:27 PM
  #11  
jakio's Avatar
Member
 
Joined: Jun 2010
Posts: 219
Likes: 0
From: Montreal,Canada
C63 2011
It is the cat,same for me can't erase the code,erase and come back again.
Reply
Old Jun 10, 2011 | 03:52 PM
  #12  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Originally Posted by jakio
It is the cat,same for me can't erase the code,erase and come back again.
Well I just did some phoning around and Ive found that the most likely problem is a sensitivity issue in the tune that needs a little refining. There is apparently nothing wrong with the car. The ECU is just reading the chemical levels (through the 02 senser) in the exhaust as being environmentally unfriendly.

Im just going to have to be annoyed by that yellow light for a bit longer until we can find a tuning solution for it. Hopefully
Reply
Old Jun 10, 2011 | 04:39 PM
  #13  
dodger63's Avatar
MBWorld Fanatic!
 
Joined: Oct 2008
Posts: 3,317
Likes: 3
From: Northport N.Y.
2013 f250 6.7 diesel
22,000 miles with cel on
Reply
Old Jun 10, 2011 | 07:12 PM
  #14  
Sonny@Marranos's Avatar
Former Vendor of MBWorld
 
Joined: Nov 2006
Posts: 124
Likes: 0
From: Sydney,Australia
E55,S500,C200 KOMP,SV300 ,LANDCRUISER SAHARA
Send me your ecu and ill fix the issue : )

Regards sonny
Reply
Old Jun 11, 2011 | 12:31 AM
  #15  
JCH's Avatar
JCH
Senior Member
 
Joined: May 2008
Posts: 279
Likes: 0
From: Oceanside, Ca
2009 C63
3 days so far. Came on a month or so ago and went off after 3 days. A few months prior to that it came on and dealer replaced the purge valve. If it persists I'll take it to the dealer. Runs just fine. I'm not worried about it. Seems to be a fairly common occurrence with these cars.
Reply
Old Jun 11, 2011 | 02:22 AM
  #16  
_AMG_'s Avatar
MBWorld Fanatic!
 
Joined: Jul 2009
Posts: 6,677
Likes: 4
From: Los Angeles
C63
Originally Posted by CELLryuu
Possible but the codes indicate that its the cat which may be covered under the Kleemann warranty. Ill just have to take it back to the shop and find out. Thing is, I dont drive the car much and the shop is an hour away.

I was just wondering how many people said "f|_|ck it" and just got fed up and drove with the CEL on anyway lol.
I would contact Kleeman, and talk to them about replacing your HFC's under warranty, That would be the best option imo.
Reply
Old Jun 11, 2011 | 02:54 AM
  #17  
DuaneC63's Avatar
MBWorld Fanatic!
 
Joined: Mar 2011
Posts: 1,601
Likes: 10
From: San Diego/San Francisco
AMG GLC63. Audi R8
Always have it checked but unless it flashing or the car is running funny, it's just usually some smog bs.
Reply
Old Jun 11, 2011 | 09:46 AM
  #18  
CELLryuu's Avatar
Thread Starter
Super Member
 
Joined: Feb 2011
Posts: 658
Likes: 2
From: DFW
C63 AMG Coupe P31
Originally Posted by _AMG_
I would contact Kleeman, and talk to them about replacing your HFC's under warranty, That would be the best option imo.
Already contacted them and they were very informative. They explained the entire situation to me, as they have come across this situation several times.

Originally Posted by DuaneC63
Always have it checked but unless it flashing or the car is running funny, it's just usually some smog bs.
I ended up having it checked again (as I stated in an above post) and you are exactly right, (in short) it all comes down to some smog bs

Last edited by CELLryuu; Jun 11, 2011 at 09:48 AM.
Reply
Old Jun 11, 2011 | 09:54 AM
  #19  
mthis's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2008
Posts: 4,455
Likes: 31
From: Ny
Anything W/4Wheels
Originally Posted by dodger63
22,000 miles with cel on
lmao thats why your car is the Q/F C63 NA bc of the CEL
Reply
Old Jun 12, 2011 | 10:12 PM
  #20  
JCH's Avatar
JCH
Senior Member
 
Joined: May 2008
Posts: 279
Likes: 0
From: Oceanside, Ca
2009 C63
Originally Posted by JCH
3 days so far. Came on a month or so ago and went off after 3 days. A few months prior to that it came on and dealer replaced the purge valve. If it persists I'll take it to the dealer. Runs just fine. I'm not worried about it. Seems to be a fairly common occurrence with these cars.
Sure enough, my CEL went off yesterday on it's own after another 3 day appearance. This is the second time in about 3 months. Seems to occur after filling the tank, but then again I am often filling the tank so go figure. I did notice that the oil level was a bit low and added 1/2 qt, but assume that was unrelated to the CEL. Guess this is just part of the experience of lving with the "Beast".
Reply
Old Jun 13, 2011 | 11:32 AM
  #21  
jvanbrecht's Avatar
MBWorld Fanatic!
 
Joined: Apr 2010
Posts: 1,955
Likes: 7
2017 Mini Cooper S Clubman ALL4 - British Racing Green
Well.. I have never left a CEL on.. but I live in a state where you have to get emissions checked every 2 years, and it's an auto failure if there is a CEL.

Then there is VA, where you have to get a yearly inspection, again, auto failure if any lights are on (not just CEL).

I guess if you don't have inspections, I would not worry about it if you can get in writing that it won't affect the engine in any way..
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 01:31 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE