When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Om642 350 bluetec, had the exhaust gas temperature sensor bank1 sensor 1 replaced 3 days ago due to an error code and the engine light was on. Drove a short trip, everything seemed normal. Started the car later that evening and the engine light came on again, then with error code 13AF00 and P2464 - too much soot in dpf. The next day these errors and the check engine light were gone. After a 500km drive, the engine light came back, then with error code P2089 and P0546 - error on exhaust gas temperature sensor bank 1 sensor 1 again.....now also in limp mode.....I don't understand anything, the sensor is new. .. Does anyone here have any tips for me? Or have you come across something like this?
Last edited by Havrahane; Feb 18, 2024 at 03:48 PM.
Did you replace the sensor without checking whether or not there was an actual issue going on? From what you wrote, it looks like you replaced the sensor blindly - meaning, you replaced it without actual diagnosis. Or, how did you verify that there WASN'T an actual issue?
Did you replace the sensor without checking whether or not there was an actual issue going on? From what you wrote, it looks like you replaced the sensor blindly - meaning, you replaced it without actual diagnosis. Or, how did you verify that there WASN'T an actual issue?
Thank you very much for your answer! a diagnosis was made at an authorized workshop, and the sensor was replaced as a result of that at the workshop. there were no other errors found at that time 🤷♂️
You are not telling us the car year, when post 2014 models require SCN coding on any new module.
I don't know if your sensor had a module, but when you drive diesel with faulty sensor, the computer will not do DPF regeneration.
That will overload DPF and once it exceed 200%, the car no longer will do regeneration on its own.
Meaning you created secondary problem.
Get better scanner, so you can have full picture what is happening.
If the shop replaced the sensor and it comes as a bad, go back to them.
Thank you very much for your answer! a diagnosis was made at an authorized workshop, and the sensor was replaced as a result of that at the workshop. there were no other errors found at that time 🤷♂️
Why do you post with lettering that is almost same color as background? Makes it very difficult to read FYI.
Thank you very much for your answer! a diagnosis was made at an authorized workshop, and the sensor was replaced as a result of that at the workshop. there were no other errors found at that time 🤷♂️
You are not telling us the car year, when post 2014 models require SCN coding on any new module.
I don't know if your sensor had a module, but when you drive diesel with faulty sensor, the computer will not do DPF regeneration.
That will overload DPF and once it exceed 200%, the car no longer will do regeneration on its own.
Meaning you created secondary problem.
Get better scanner, so you can have full picture what is happening.
If the shop replaced the sensor and it comes as a bad, go back to them.
sorry, it's a 2011 model, mercedes gl. I don't know what SCN means, but do I understand you correctly that the new sensor they fitted has to be coded? now it's been two days since it gave these error codes and went into limp mode, haven't recovered the errors and the car runs normally but i don't trust it...really expect the errors to come back. According to the diagnosis, the DPF was regenerated successfully about 3 weeks ago, approximately 1500km driven since then 🤷♂️ The workshop will look at it again, but there is a long wait before the workshop has capacity…That's why I thought I'd post the problem here, in the hope that I might be able to get some good advice
Last edited by Havrahane; Feb 20, 2024 at 02:25 AM.
sorry, it's a 2011 model, mercedes gl. I don't know what SCN means, but do I understand you correctly that the new sensor they fitted has to be coded? now it's been two days since it gave these error codes and went into limp mode, haven't recovered the errors and the car runs normally but i don't trust it...really expect the errors to come back. According to the diagnosis, the DPF was regenerated successfully about 3 weeks ago, approximately 1500km driven since then 🤷♂️ The workshop will look at it again, but there is a long wait before the workshop has capacity…That's why I thought I'd post the problem here, in the hope that I might be able to get some good advice
SCN is new software, who forces owners to go to dealers only even for small repairs,
On older cars, O2 sensor replacement cost in the range of $300, on newer Nox sensor with coding is reaching $1000.
Anyway, your 2011 doesn't require it.
Find out DPF load?
I ditto suggestion of going to different shop.
SCN is new software, who forces owners to go to dealers only even for small repairs,
On older cars, O2 sensor replacement cost in the range of $300, on newer Nox sensor with coding is reaching $1000.
Anyway, your 2011 doesn't require it.
Find out DPF load?
I ditto suggestion of going to different shop.
Ok, then I understand when you ask about dpf load, do you mean the differential pressure? If so, it is at 8 at idle and 67 at 3000 rpm, so not when driving but if I rev it. but before the regeneration it was at 510 🤷♂️
Drove a trip today, and the car seems normal. Also checked with diagnosis, there were no error codes stored.
Proper scanner will show you DPF load in %.
If it is above 100% and not doing regeneration, you have a problem. When it exceeds 200% - you are in deep do-do.
Proper scanner will show you DPF load in %.
If it is above 100% and not doing regeneration, you have a problem. When it exceeds 200% - you are in deep do-do.
Understood! will check it with another diagnostic device👍 so if the dpf is over 200%, what is the solution then? new dpf?🙈
Understood! will check it with another diagnostic device👍 so if the dpf is over 200%, what is the solution then? new dpf?🙈
Cleaning. The DPF cleanings shops pop up everywhere those years, but we also have forum sponsor, who sells new DPF in $1000 range.
So if you have old DPF, who needs $500 cleaning job, I would consider new one.
Originally Posted by kajtek1
SCN is new software, who forces owners to go to dealers only even for small repairs,
On older cars, O2 sensor replacement cost in the range of $300, on newer Nox sensor with coding is reaching $1000.
Anyway, your 2011 doesn't require it.
Find out DPF load?
This guy is so full of BS and misinformation about the reason and how toos of SCN
See attached for the correct information and forget about sausage ***** types and diagnostics
Sorry for my poor competence and understanding which leads to a lot of questions🙈 but I try to understand and not least to learn
but do you mean that the exhaust sensor that was changed must be coded anyway?
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.
