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Where to buy Cat replacement? "4D16 SRC System, efficiency" code
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08-25-2016, 10:50 PM | #1 |
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Where to buy Cat replacement? "4D16 SRC System, efficiency" code
I replaced both NOX sensors, refill/reflash tank with fresh DEF, tested meetering valve, cleaned carbon and EGR, regenerated DPF and it fixed many issues but still shows the "4D16 SRC System, efficienty" code. I guess it can be related to Cat, what do you think? If that is Cat, how to replace it and where is the best place to get new one? Is it possible to replace only the cat stone or it should be replaced within all exsaust pipe? Thank you.
Last edited by Greck; 08-29-2016 at 07:49 PM.. |
08-25-2016, 11:31 PM | #2 |
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Check your engine temperature at highway speed. If you are running less than 83-86deg C then you need a new thermostat and your SCR efficiency code will be gone.
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08-26-2016, 09:10 AM | #3 | |
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08-26-2016, 11:47 AM | #5 |
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Actually i am talking about SCR adjustment function in which you have to drrive it for 30 mins and DDE shuts off urea injection and then both nox sensors(pre cat and post cat) should read same.
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08-26-2016, 12:03 PM | #6 |
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Do you remember the name of that function? "SCR adjustment"? or "SCR test"? I will definitely do it, but I can't believe that cat by itself(without DEF) do not reduce the NOX... in case if cat reduce it by itself First and Second NOX sensors will not have the same values...
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08-26-2016, 12:40 PM | #7 | |
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I haven't done it myself but its in : Vehicle management---Service function----power train---Digital diesel electronics (US version)----SCR system-----SCR system adjustments--then follow the directions. I have attached related documents as well. Also check your Def injection nozzle for any urea buildup. |
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08-26-2016, 01:36 PM | #9 |
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There has been a fair number of 4d16 errors lately. I think it's mostly because the cars are now getting up in miles and the NOx sensors are failing due to old age (entirely normal, but they're really expensive compared to O2 lambda sensors.) There have been a number of posts and threads on it, so if you search the subforum for 4d16 there a number of hits.
This one has a substantial amount of info about finding the true problem; someone has suggested I should do a post for stickiness... http://www.e90post.com/forums/showth...highlight=4d16 |
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08-27-2016, 12:47 AM | #14 | |
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08-29-2016, 03:57 PM | #17 |
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08-29-2016, 04:30 PM | #18 |
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There was a member named sour335D that was selling his stuff. He hasn't been on here in a long time though. I might have his email address. I will dig. He changed over to an aftermarket exhaust spring/summer 2015.
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08-29-2016, 05:53 PM | #19 |
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What do you think is reasonable price for used cat? I'm worrying about the condition of the used Cats, I heard that Cats are very sensitive and it can be easily damaged during shipping, or it can be from the salvage car, or from the car with 100k> and so on...
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08-29-2016, 06:06 PM | #20 |
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08-29-2016, 06:49 PM | #21 |
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I did it several weeks ago... After that I had error about NOX sensor before cat and I replaced that one, now it says Catalytic converter... Do you think that it can be crystallized in two-three weeks in case if front NOX shows wrong values? Should I check it again?
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