OBD Code P2187/2189 System too lean
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Any luck with the codes you were pulling? I have the same codes along with P2006...Thinking it is the MAF that needs to be replaced but want to feel a little better about it before spending the $300.00 on the hunch.
I have the same issue, bank 1 and 2 is your o2 sensors pre and post cat from what I have read. If I remember right it could be a vacuum leak. there is plenty of stuff on here about it. As for the maf try cleaning it before you replace it! I cleaned my maf, but havent cleared the code so I dont know if that fixed it.
I cleaned my MAF and put it back in the car and still had the same codes (P2006, P2187, & P2189) even after clearing them. So i went ahead and bought a new MAF over the weekend and it jsut arrived today...the codes P2187 & P2189 are no longer present...so if you arent able to clean it then you might have to replace it...
I had these codes on my 2006 R350 (M272 engine). I replaced the MAF sensor, but codes still there. After a week or so idle became erratic and engine had problems at low rpm's. I had no issues at higher rpm's (plenty of power, smooth at most driving speeds) Took it to my indy tech and he did a smoke test and found a crack in the intake manifold. Big bucks but at least he found the problem.
M272 C230
OBD shows P2187/89 and various misfires codes. Engine runs rough at idle. Fine at 2500RPM and more. Found that there is a major leak in intake manifold. "Longitudinal switch flap shaft, right cylinder bank" on the intake manifold pupped out of its position. Any fix except replacing the hole intake manifold?
OBD shows P2187/89 and various misfires codes. Engine runs rough at idle. Fine at 2500RPM and more. Found that there is a major leak in intake manifold. "Longitudinal switch flap shaft, right cylinder bank" on the intake manifold pupped out of its position. Any fix except replacing the hole intake manifold?
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Officially, the proper repair is to replace the entire intake manifold. There have been some posts where members have found a way to "manufacture" replacement parts. On the other hand, reports from a fellow forum member and MB tech (a02stang) is that parts of the intake manifold can break off and enter the combustion chamber and cause all sorts of damage, so I am not sure I'd go the "repair" method.
Bit confusing.
Did the breaking occur on the "repaired" manifold or factory original part?
Amazon.com may be selling a new oem Bosch one for about $100-$110.
I have a 2006 C230 Sport and I had P2187 and P2189 as well.
I have replaced the MAF Sensor (Bosch), replaced Fuel Filter (KL82).
The error codes are gone, for now....not put enough miles on it to know for sure that these codes won't reappear.
At any rate, I don't have smooth idling. When at idle, the RPMs bump up and down a bit.
I've read on here about the intake manifold....ack! Certainly hope that's not the case. How would one even diagnose that?
I have replaced the MAF Sensor (Bosch), replaced Fuel Filter (KL82).
The error codes are gone, for now....not put enough miles on it to know for sure that these codes won't reappear.
At any rate, I don't have smooth idling. When at idle, the RPMs bump up and down a bit.
I've read on here about the intake manifold....ack! Certainly hope that's not the case. How would one even diagnose that?
I don't know the detailed failure mechanism of intake manifold failure on C230. Is it cracking or mating surface to the cyl head failure or gasket ???
In any of those cases, engine would run lean.
The old trick is to spray some kind of carb cleaner at & around intake manifold while engine is idling. If the engine rpm suddenly shoots up momentarily, you have a (vacuum) leak.
My 07 E63 has the "check engine" light came up. I follow some of the post in this forum and had the computer scan with the error code P2187. My car also had lots of smokes from the pipe tale when first start in the morning and after a few minutes, it's gone. Yesterday I filled up the gas tank with "non ethanol 90" and this morning I didn't see lots of smoke any more. I had the "10% ethanol 93" before that. I am just wondering if the ethanol might cause the check engine light and smoke? I want to reset just the check engine light and see if this light will come back. Can some one please show me how to reset this light? I don't want to reset the service status. Thank you.
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I have a 2006 R350 3.5L with the P2187 & P2189, P0300, P0304, P0305, P0306 at 1500-2000 rpm it ran fine but at idle it acts as if it's going to shut off but doesn't so I did a compression test on those cylinders which so I did some research on line and found that there are 2 timing chains and tensioners that 1 may have become weak causing the chain to slip throwing the timing off on that side hence ruff idle multiple miss firers except at higher rpm. Now I haven't tested this theory yet but it does make since to me so I'll have to pull the covers to check the timing marks. I'll get back to this forum later. just something to think about good luck.
Go to MBWorld for help. BenzWorld is dead!
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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@aaronhit711 : Those are all generic OBDII codes that don't always translate into MBZ-specific DTCs, but at least the basic meanings are probably the same. The P2187 and P2189 just indicate a lean mixture. P0300 is "misfire" and then the others are the specific cylinders experiencing the misfires - 4, 5 and 6, all on the left bank (USA driver's side). I don't see this being a timing issues. Most likely you have a vacuum leak. Make sure that the engine cover is fully seated on the MAF sensor opening and that its seal is tight. Check for broken vacuum hoses. YOu might consider having a smoke test done to see where it might be leaking. I have seen cracked intake manifolds and even bad manifold gaskets cause this issue.
@dustinN : It's not dead here, but the forum has been struggling a bit since the conversion to the XenForo software last year. That is an unfortunate move made by the owners of the forum. The owners of the MBWorld forum have also made some unfortunate decisions. I use links on my website to publish information, and my website home page does advertise my LOCAL repair service. This is really just a side gig that does get me parts discounts and tax breaks. But MBWorld refuses to understand this, so they pretty much banned me until I agreed to be a paid advertiser. I do not need to advertise on a national forum because I only work locally. On top of that, any forum members who actually want to visit me for help are never charged. But the MBWorld forum owners refuse to understand that, so you won't find me there.
@dustinN : It's not dead here, but the forum has been struggling a bit since the conversion to the XenForo software last year. That is an unfortunate move made by the owners of the forum. The owners of the MBWorld forum have also made some unfortunate decisions. I use links on my website to publish information, and my website home page does advertise my LOCAL repair service. This is really just a side gig that does get me parts discounts and tax breaks. But MBWorld refuses to understand this, so they pretty much banned me until I agreed to be a paid advertiser. I do not need to advertise on a national forum because I only work locally. On top of that, any forum members who actually want to visit me for help are never charged. But the MBWorld forum owners refuse to understand that, so you won't find me there.
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I drive 2006 C280 Mercedes Benz
I’ve had similar issue the whole 3 years I had the car! About 6 months ago the problems got bad where my car would die when I would idle to long. And had tons of mis firing codes l, So I took it to mechanic and he replaced the spark plugs and I cleaned the mass airflow sensor and it drove great and haven’t had a problem till about 2 weeks ago and engine light came on and now I’m starting to notice the at low rpm rough and high idle Taking place again not to mention loud!! So I feel like that didn’t fix the issues before it was like a ban aid and now it’s starting to cause problems again. Thoughts?
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Step 1 is to verify that the engine cover (which is also the air filter housing) is securely seated on the engine. Feel on back side to make sure it is well seated on the gasket on top of the MAF sensor - there may even be a metal clip there to hold it in place. Also, have you pulled codes to see what's going on?
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Can you provide website or link to buy it ?
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can you provide website or link to buy it ?
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Welcome to the forum @cheverejose91 - please take a moment to read the information on the link below. It explains how to update your user profile so that your car's details and your location appear on each post below your avatar. This is good information for others to know when trying to help. It also has good information about how the forums are organized and how to use the search feature:
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