'14 GLK250 code P2002FC
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Joined: Oct 2018
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GLK250
'14 GLK250 code P2002FC
Hi everyone,
New to the forum here and have been following the issues with the diesels and Adblue system in our vehicles. I'm really hoping the lawsuit brings some light to the situation and some closure for us as owners. I haven't had much luck finding specificinfo on the possibilities of issues I'm experiencing so lets give it a shot.
I have a '14 GLK 250 (84,000 miles) out of warranty on all fronts
Drives perfectly fine, but I've noticed that it no longer informs me when to add DEF fluid like it originally did. I just have to guess now.
CEL came on about 3 weeks ago and will intermittently go off.
Indy shops can't give me a straight answer other than "probably replace the entire AdBlue system" -- No thank you
MB Dealership wants 4 hours of diagnosing time, that's $744 just to diagnose the issue with no guarantee to find out the actual issue--- Again, no thank you
The only thing they will give me is the code P2002FC (particulate trap efficiency below threshold)
Does anyone have experience with this? My thought is the DPF is clogged, but drive-ability isn't affected.. My second thought was a sensor gone bad downstream from the DPF.
New to the forum here and have been following the issues with the diesels and Adblue system in our vehicles. I'm really hoping the lawsuit brings some light to the situation and some closure for us as owners. I haven't had much luck finding specificinfo on the possibilities of issues I'm experiencing so lets give it a shot.
I have a '14 GLK 250 (84,000 miles) out of warranty on all fronts
Drives perfectly fine, but I've noticed that it no longer informs me when to add DEF fluid like it originally did. I just have to guess now.
CEL came on about 3 weeks ago and will intermittently go off.
Indy shops can't give me a straight answer other than "probably replace the entire AdBlue system" -- No thank you
MB Dealership wants 4 hours of diagnosing time, that's $744 just to diagnose the issue with no guarantee to find out the actual issue--- Again, no thank you
The only thing they will give me is the code P2002FC (particulate trap efficiency below threshold)
Does anyone have experience with this? My thought is the DPF is clogged, but drive-ability isn't affected.. My second thought was a sensor gone bad downstream from the DPF.
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
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From: WI
GLK 250
Perhaps invest in a MB-specific scan tool and do some digging on your own. The Bluetec is quite complicated and has so many involved parts and sensors that it’s almost a fool’s errand to try and get to the bottom of it for sure.
If it’s the DPF itself, you have to determine if it’s just clogged or if it cracked. On VW TDIs, we suspect a dpf is cracked if you can wipe soot out from inside the ends of the tailpipe.
If it’s cracked, you’ll have to either replace it or eliminate the entire system (there is a thread on this already). If it’s just clogged and the system can’t scrub it clean with the urea (AdBlue) then you may be able to find a shop that will remove it from the car and clean it. Search for shops that work on Sprinters or even heavy hauling rigs that need this done. You may get lucky that way.
Then again, it could be one of the many sensors in the system, from the temp sensor to the Nox sensor, or some other sensor. Don’t waste your dollars at the stealership. I’d say the cheapest option will likely be to delete the system and get the software updated. This only if you live in an area that doesn’t require emission inspections. Otherwise, try narrowing down the issue more.
Good luck.
If it’s the DPF itself, you have to determine if it’s just clogged or if it cracked. On VW TDIs, we suspect a dpf is cracked if you can wipe soot out from inside the ends of the tailpipe.
If it’s cracked, you’ll have to either replace it or eliminate the entire system (there is a thread on this already). If it’s just clogged and the system can’t scrub it clean with the urea (AdBlue) then you may be able to find a shop that will remove it from the car and clean it. Search for shops that work on Sprinters or even heavy hauling rigs that need this done. You may get lucky that way.
Then again, it could be one of the many sensors in the system, from the temp sensor to the Nox sensor, or some other sensor. Don’t waste your dollars at the stealership. I’d say the cheapest option will likely be to delete the system and get the software updated. This only if you live in an area that doesn’t require emission inspections. Otherwise, try narrowing down the issue more.
Good luck.
Thread Starter
Junior Member
Joined: Oct 2018
Posts: 22
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GLK250
I do fortunately live in an area that does not have emission testing, and as much as I'd like to keep this thing breathing clean, I may have to delete the system if other options aren't reasonable.
Do you have a recommendation for how much of the system I should delete (just the dpf or also the adblue?) and if you know a place where I can purchase it.
Thanks for help I truly appreciate it.
Do you have a recommendation for how much of the system I should delete (just the dpf or also the adblue?) and if you know a place where I can purchase it.
Thanks for help I truly appreciate it.
Member
Joined: Mar 2003
Posts: 188
Likes: 78
From: Toronto, Canada
GLC300 (mine) GLK250 (wife's)
Don't know where you are but in Canada MB has extended the warranty on the Soot Particulate Sensor to 10 yrs, it's likely that this is applicable in the US also. If (as Andreigbs suggests) you get an MB-specific scan tool and find that the SPS is the problem, you should be able to have it replaced at no charge.
$744 for a diagnostic is nuts. One suggestion is to call MBUSA/MBCanada to clarify that if you find the problem is the SRS, your stealer will replace it without a scan charge or have the scan included in the warranty coverage. Long shot I know, but maybe worth a try.
$744 for a diagnostic is nuts. One suggestion is to call MBUSA/MBCanada to clarify that if you find the problem is the SRS, your stealer will replace it without a scan charge or have the scan included in the warranty coverage. Long shot I know, but maybe worth a try.
Thread Starter
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GLK250
I'm in South Florida, but I did go out at lunch and check the tailpipes... They are loaded with soot, so I think the error code along with the mass amounts of black soot in the tailpipe should point me in the direction of a cracked DPF. I guess now the thought process is do I just ignore the CEL and drive it (as it drives fine) or should I be worried about what will happen? I don't want to get stuck with my pants down one day and find myself in limp home mode or something. There are no emission tests so I'm clear there.. I wonder if I can get a tune that simply cheats the downstream sensors or turns them off (to get rid of the CEL) and go about my merry way..
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
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From: WI
GLK 250
1) Dig deep with the scanner first. Maybe it is a sensor that's causing the system to malfunction. Then see if it's possible to force a regen while running a DPF cleaning solution fuel additive. I think LiquiMoly makes one. Reset the CEL and cross your fingers that it stays off.
2) Have everything south of the cat converter removed and replaced with stainless steel exhaust pipe, and get the software tune of your choice. Most will result in at least 30 to 40 additional ponies and no more emissions worries. You can then also run the best synthetic heavy duty diesel truck oils instead of the MB spec stuff which was designed primarily to protect the emissions components, NOT the engine.
Thread Starter
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GLK250
There are tunes available but eventually the DPF and other emissions equipment will become fully clogged. At that point, you'll have to remove them to allow your engine to breathe again. If you plan on keeping the beast long-term, then I would suggest doing it right the first time:
1) Dig deep with the scanner first. Maybe it is a sensor that's causing the system to malfunction. Then see if it's possible to force a regen while running a DPF cleaning solution fuel additive. I think LiquiMoly makes one. Reset the CEL and cross your fingers that it stays off.
2) Have everything south of the cat converter removed and replaced with stainless steel exhaust pipe, and get the software tune of your choice. Most will result in at least 30 to 40 additional ponies and no more emissions worries. You can then also run the best synthetic heavy duty diesel truck oils instead of the MB spec stuff which was designed primarily to protect the emissions components, NOT the engine.
1) Dig deep with the scanner first. Maybe it is a sensor that's causing the system to malfunction. Then see if it's possible to force a regen while running a DPF cleaning solution fuel additive. I think LiquiMoly makes one. Reset the CEL and cross your fingers that it stays off.
2) Have everything south of the cat converter removed and replaced with stainless steel exhaust pipe, and get the software tune of your choice. Most will result in at least 30 to 40 additional ponies and no more emissions worries. You can then also run the best synthetic heavy duty diesel truck oils instead of the MB spec stuff which was designed primarily to protect the emissions components, NOT the engine.
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MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
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From: WI
GLK 250
Simply put, leaving the stock components in place and "turning off" the system will eventually plug everything up. Have you seen older diesels smoke? All of that soot - which is a normal byproduct of diesel combustion - will clog up the components it passes through, creating backpressure and restricting flow.
And turning the emissions system off means other parameters are being changed as well, such as EGR duty cycle, fresh air and fuel mixtures, boost and timing/advance and the like. All of this results in, shall we say, "robust" exhaust emissions. You'll need to straight-pipe it basically, from the cat all the way back till it splits for the dual tailpipe tips.
I suggest you read this entire thread before deciding your course of action: https://mbworld.org/forums/glk-class...-disabled.html
And turning the emissions system off means other parameters are being changed as well, such as EGR duty cycle, fresh air and fuel mixtures, boost and timing/advance and the like. All of this results in, shall we say, "robust" exhaust emissions. You'll need to straight-pipe it basically, from the cat all the way back till it splits for the dual tailpipe tips.
I suggest you read this entire thread before deciding your course of action: https://mbworld.org/forums/glk-class...-disabled.html
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Thread Starter
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GLK250
Maybe I'm misunderstanding something, I've read all the posts regarding the delete (including that one, which details how effective it is and a positive outcome from those that have used it) but it seems like you're telling me that a delete and retune will eventually clog my entire system and you're point me away from it.
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Joined: Jul 2012
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From: WI
GLK 250
My apologies, I’ll clarify: a delete and retune is ideal. A retune without deleting is not.
(Strictly speaking, it would be ideal if the system just worked and gave you no problems. But when it does, solutions are limited and costly. I’m encouraging you to do your due diligence first and research all aspects before chopping off parts. I’ll soon be in the same boat, only a matter of time.)
(Strictly speaking, it would be ideal if the system just worked and gave you no problems. But when it does, solutions are limited and costly. I’m encouraging you to do your due diligence first and research all aspects before chopping off parts. I’ll soon be in the same boat, only a matter of time.)
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GLK250 Bluetec 2014
MGRYCH,
I having the same problem and live in Florida. What have you done with the DPF issues? My car is a 2014 GLK 250 BlueTec. I have been told to replace the DPF, ok. It's expensive but I need it to operate my car. I have had extensive CEL lights, etc. The dealership informed me the part is back ordered. Luckily they gave me a rental car while I'm waiting. That was August 13. I have spoken to Corporate many times and they only will offer me $2000 towards a new car. They will not tell me when the part will arrive in the states. I am very frustrated about the whole cracked Diesel Particulate Filter replacement especially it will cost me another $3000 to repair the car. I am now waiting to talk to the State Attorney if I don't get more relief from Mercedes Benz USA. Car is at 88k miles. I wonder if I went to Canada they would offer me the 100,000K warranty?
Your thoughts?
I having the same problem and live in Florida. What have you done with the DPF issues? My car is a 2014 GLK 250 BlueTec. I have been told to replace the DPF, ok. It's expensive but I need it to operate my car. I have had extensive CEL lights, etc. The dealership informed me the part is back ordered. Luckily they gave me a rental car while I'm waiting. That was August 13. I have spoken to Corporate many times and they only will offer me $2000 towards a new car. They will not tell me when the part will arrive in the states. I am very frustrated about the whole cracked Diesel Particulate Filter replacement especially it will cost me another $3000 to repair the car. I am now waiting to talk to the State Attorney if I don't get more relief from Mercedes Benz USA. Car is at 88k miles. I wonder if I went to Canada they would offer me the 100,000K warranty?
Your thoughts?
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
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From: WI
GLK 250
I have been told to replace the DPF, ok. It's expensive but I need it to operate my car.
Unless you are required to pass emissions inspection in order to renew your vehicle registration, you don't HAVE TO replace it. You can remove the entire system as discussed in other threads.
If/when this happens to mine (knocks on wood), which is currently running great at 106xxx miles, I will be unable to avoid the pothole that causes the entire system to just fall off the car.
You have options, don't let the stealership force or pressure you into anything.
Senior Member
Joined: Jul 2014
Posts: 422
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From: South East US.
2015 GLK350
Unless the DPF is damaged or completely blocked it can be cleaned for considerably less than the cost of replacement. It has to be removed and can be take to any of the big rig DPF cleaning businesses that have recently popped up. Google for one near you.
And when it comes time to sell the vehicle some dealers will refuse to take it with missing emissions components.
Last edited by formerjeepguy; Oct 4, 2019 at 12:42 PM.
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
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From: WI
GLK 250
As I stated previously: there are options. We don't know if the DPFs are damaged or just too dirty to be scrubbed during a normal regen.
If they're damaged, the only fix is to replace them. That's $$$. Even if they can be cleaned and reinstalled, the resetting of sensors and the rest of the Bluetec system may not be successful. There simply aren't enough data points to go by, as not many folks have done this successfully and posted about it.
GLK owners who are in this position need to decide what works best for their individual situation. Fix it, trade it, tune and delete it... all are viable options and it depends on what your goals are.
If they're damaged, the only fix is to replace them. That's $$$. Even if they can be cleaned and reinstalled, the resetting of sensors and the rest of the Bluetec system may not be successful. There simply aren't enough data points to go by, as not many folks have done this successfully and posted about it.
GLK owners who are in this position need to decide what works best for their individual situation. Fix it, trade it, tune and delete it... all are viable options and it depends on what your goals are.
Senior Member
Joined: Jul 2014
Posts: 422
Likes: 61
From: South East US.
2015 GLK350
As I stated previously: there are options. We don't know if the DPFs are damaged or just too dirty to be scrubbed during a normal regen.
If they're damaged, the only fix is to replace them. That's $$$. Even if they can be cleaned and reinstalled, the resetting of sensors and the rest of the Bluetec system may not be successful. There simply aren't enough data points to go by, as not many folks have done this successfully and posted about it.
GLK owners who are in this position need to decide what works best for their individual situation. Fix it, trade it, tune and delete it... all are viable options and it depends on what your goals are.
If they're damaged, the only fix is to replace them. That's $$$. Even if they can be cleaned and reinstalled, the resetting of sensors and the rest of the Bluetec system may not be successful. There simply aren't enough data points to go by, as not many folks have done this successfully and posted about it.
GLK owners who are in this position need to decide what works best for their individual situation. Fix it, trade it, tune and delete it... all are viable options and it depends on what your goals are.
