U1408 ошибка мерседес

Описание U1408 ошибки автомобиля Mercedes. В нашем справочнике имеется следующая информация:

На русском языке:

Это не часто встречающаяся неисправность в электрической цепи двигателя или автоматической коробки передач, вероятнее всего специфическая для Вашей марки автомобиля. 

На английском языке:

OBD2 not find in catalog. 

Выберите модель для возможности более детального просмотра информации по этой ошибке:

Найти причину   >>> 

Принимая во внимание тот факт, что OBD2 ошибки работы электронных систем автомобиля не всегда на прямую указывают на неработающий элемент, а чаще дают всего лишь общую информацию о неисправности, мы пришли к следующему выводу:

В разных марках и моделях автомобилей одна и также ошибка может возникать как следствие неисправности абсолютно разных элементов.

Стало понятно, что просто необходим ресурс в котором можно найти не только общую информацию об OBD2 ошибке, а практические данные по конкретному автомобилю.

Опыт автоэлектриков показал, что если рассматривать определенную марка-модель автомобиля, то в подавляющем большинстве случаев причина возникновения какой либо ошибки одна и также.

Мы создаем, не без вашей помощи, справочник причинно-следственной связи возникновения той или иной OBD2 ошибки у конкретного автомобиля (марка и модель). Если на Ваш автомобиль не найдено описание (причинно-следственной связи) ошибки, то не стесняйтесь задавайте вопрос.

Если у вас есть опыт в устранении той или иной ошибки — делитесь опытом с другими пользователями. Так мы сможем сформировать полезный ресурс. По капле от каждого и всем будет полезно.

Возможно будет интересно:

Если ошибка указывает на неверные параметры (высокие или низкие значения) какого нибудь из датчиков или анализаторов, то вероятней всего этот элемент исправен, а проблему надо искать так сказать «выше по течению», в элементах работу которых анализирует датчик или зонд.

Если ошибка указывает на постоянно открытый или закрытый клапан, то тут надо подойти к решению вопроса с умом, а не менять бездумно этот элемент. Причин может быть несколько: клапан засорен, клапан заклинил, на клапан приходит неверный сигнал от других неисправных узлов.

Автомобили с каждым днем становятся все более сложными, но и более диагностируемыми. Наш форум создан для всех, от простых автолюбителей до профессиональных автоэлектриков.

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  • Strange OBD2 Code — U1408 — Need Help

Thread: Strange OBD2 Code — U1408 — Need Help

  1. Strange OBD2 Code — U1408 — Need Help

    Hello,I have a 2014 328i x Drive, 60K miles. Every since it started getting cold in New England (under 30 degrees) my check engine light has come on with code «U1408». The shop I usually go to thought it was thermostat related issues and it should be under warranty. So, I brought it to the dealer and they replaced the thermostat under warranty, but the same day it was around 15 degrees out and the CEL came back on, this time with U1408 and P0128 (low coolant temp). I brought it back to the dealer, but it was around 50 degrees that day and of course the light was no longer on . They didnt see any fault history related to the thermostat.The CEL comes on with U1408 whenever it is cold out (under 30 degrees) and will turn off on warmer days. The oil temperature gauge also doesn’t move above 160 when the light is on, and the fans run super loud when its cold out and I have the heat on. Does anyone know what this could be? Car still drives ok, don’t seem to be experiencing any power limiting. Thanks!

  2. So I accessed the hidden menu in the cluster and after a 30 minute drive (mostly highway at 65mph) the oil temp and coolant temp were only around 90 degrees C (194 F). It was 40 degrees F outside. This seems to be below operating temperature and almost sounds like the thermostat is stuck open, even though it was just replaced. The CEL also shut off again. The oil temp gauge does match what the car is telling me. Any thoughts?

    Last edited by Emoney Mango; 02-13-2019 at 05:50 PM.

  3. What tool are you using to read these codes?

    Basic OBD2 is vague and many times useless at diagnostics. If possible use a scanner that reads BMW manufacturer codes. They will be much more use to diagnosing the car.

    -Abel

    — E36 328is ~210-220whp: Lots of Mods.
    — 2000 Z3: Many Mods.
    — 2003 VW Jetta TDI Manual 47-50mpg
    — 1999 S52 Estoril M Coupe
    — 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    — 2019 M2 Competition, self-tuned, 504whp
    — 2016 Mini Cooper S

  4. Quote Originally Posted by 328 Power 04
    View Post

    What tool are you using to read these codes?

    Basic OBD2 is vague and many times useless at diagnostics. If possible use a scanner that reads BMW manufacturer codes. They will be much more use to diagnosing the car.

    Thanks for the reply, I bought a bluetooth scanner and bimmerlink for this very reason. It’s coming in today, I’ll post back when I scan it.

  5. Hi, my car is throwing the exact same codes. What did the bimmerlink say? What was the fix?

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12-02-2018, 02:09 AM

  
#1

Second Lieutenant

Dreamvillainz's Avatar

United_States

Drives: 2013 335xi

Join Date: Oct 2015

Location: Utah

Anyone ever had a U1408 code?

CEL popped up last week.. can’t go to the dealer until the 5th!
     

12-02-2018, 10:52 AM

  
#2

Captain

00e46sedan's Avatar

United_States

Drives: 16’ F13 640i M Sport

Join Date: Mar 2014

Location: Colton

I had it. Car went in limp mode/safe mode i noticed my oil temperature gauge /needle never went up it stayed cold. This was when I first left my car stationed outside parked overnight as oppose to me always having it parked indoors in the apartment complex I always parked in. It was below 65 that night .

I’m not sure if it had something to do with that and also it was a couple days I didn’t let the car warm up but idk if this reflects that ?

Also I was already due for an oil change maybe about a few hundred if that more miles overdue. And some say the oil can affect that in the oil pressure since its old.I then had oil change that same day I got the cel witht he code and ever since I never had the issue. And I always make sure to warm up the car for a few minutes.
     

12-02-2018, 02:03 PM

  
#3

Lieutenant

vinzcast21's Avatar

Drives: F30 340i MY2017

Join Date: Jul 2018

Location: canada

had it in my old car, was a shorted sensor only,

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12-02-2018, 02:26 PM

  
#4

Second Lieutenant

Dreamvillainz's Avatar

United_States

Drives: 2013 335xi

Join Date: Oct 2015

Location: Utah

Quote:

Originally Posted by vinzcast21
View Post

had it in my old car, was a shorted sensor only,

Quote:

Originally Posted by 00e46sedan
View Post

I had it. Car went in limp mode/safe mode i noticed my oil temperature gauge /needle never went up it stayed cold. This was when I first left my car stationed outside parked overnight as oppose to me always having it parked indoors in the apartment complex I always parked in. It was below 65 that night .

I’m not sure if it had something to do with that and also it was a couple days I didn’t let the car warm up but idk if this reflects that ?

Also I was already due for an oil change maybe about a few hundred if that more miles overdue. And some say the oil can affect that in the oil pressure since its old.I then had oil change that same day I got the cel witht he code and ever since I never had the issue. And I always make sure to warm up the car for a few minutes.

Hmmmmm! I changed my oil in the summer… then I had really low coolant and that’s when the CEL came on. I filled up the coolant tank and the light is still on. my temp gauge needle hasn’t moved since I got the CEL. Interesting.

Thanks for the reply bro

Quote:

Originally Posted by vinzcast21
View Post

had it in my old car, was a shorted sensor only,

How much was this sensor? my car is going in soon. thanks for the reply bro.
     

12-02-2018, 03:14 PM

  
#5

Captain

00e46sedan's Avatar

United_States

Drives: 16’ F13 640i M Sport

Join Date: Mar 2014

Location: Colton

Quote:

Originally Posted by Dreamvillainz
View Post

Hmmmmm! I changed my oil in the summer… then I had really low coolant and that’s when the CEL came on. I filled up the coolant tank and the light is still on. my temp gauge needle hasn’t moved since I got the CEL. Interesting.

Thanks for the reply bro

No worries. Yeah its a sensor too just forgot which one
How much was this sensor? my car is going in soon. thanks for the reply bro.

Let us know what it is
     

12-02-2018, 03:50 PM

  
#6

Lieutenant

vinzcast21's Avatar

Drives: F30 340i MY2017

Join Date: Jul 2018

Location: canada

Quote:

Originally Posted by Dreamvillainz
View Post

Quote:

Originally Posted by vinzcast21
View Post

had it in my old car, was a shorted sensor only,

Quote:

Originally Posted by 00e46sedan
View Post

I had it. Car went in limp mode/safe mode i noticed my oil temperature gauge /needle never went up it stayed cold. This was when I first left my car stationed outside parked overnight as oppose to me always having it parked indoors in the apartment complex I always parked in. It was below 65 that night .

I’m not sure if it had something to do with that and also it was a couple days I didn’t let the car warm up but idk if this reflects that ?

Also I was already due for an oil change maybe about a few hundred if that more miles overdue. And some say the oil can affect that in the oil pressure since its old.I then had oil change that same day I got the cel witht he code and ever since I never had the issue. And I always make sure to warm up the car for a few minutes.

Hmmmmm! I changed my oil in the summer… then I had really low coolant and that’s when the CEL came on. I filled up the coolant tank and the light is still on. my temp gauge needle hasn’t moved since I got the CEL. Interesting.

Thanks for the reply bro

Quote:

Originally Posted by vinzcast21
View Post

had it in my old car, was a shorted sensor only,

How much was this sensor? my car is going in soon. thanks for the reply bro.

under warranty for me.. wouldnt cost that much comparing to changing the whole coolant system. keep in mind some people replaced their turbo because of a low coolant warning

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04-23-2022, 09:56 AM

  
#7

Second Lieutenant

Rebound's Avatar

Drives: F33: The 435i Convertible

Join Date: Dec 2017

Location: Oregon

Quote:

Originally Posted by vinzcast21
View Post

under warranty for me.. wouldnt cost that much comparing to changing the whole coolant system. keep in mind some people replaced their turbo because of a low coolant warning

I know this is an old post, but� any chance you recall which sensor was shorted?
Did they replace the sensor or repair a short in the wiring? BTW, my car has the N55, 6-cylinder.
     

04-23-2022, 10:03 AM

  
#8

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Solidjake's Avatar

Poland

Drives: ’13 328i Msport 6MT

Join Date: Jun 2009

Location: NYC/SNJ

Quote:

Originally Posted by Rebound
View Post

I know this is an old post, but� any chance you recall which sensor was shorted?
Did they replace the sensor or repair a short in the wiring? BTW, my car has the N55, 6-cylinder.

I did some googling and it looks like it was the automatic transmission temp sensor (if your car is an auto). One person had the thermostat replaced and it didn’t do anything (but that’s still worth a shot). Buy your parts from FCP Euro so you have lifetime warranty and can get a new part if it goes bad.

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Случилось страшное, загорелся джекичан. Есть у меня считыватель OBD2 с одного китайского сайта, про который диагносты хором говорят засунуть его в одно место, но сегодня он сделал все правильно.

Фото в бортжурнале Mercedes-Benz M-Class (W164)

Ошибка P1408 расшифровалась как ошибка EGR и после этого начались поиски где он и как его откручивать
Нашелся он быстро в правом дальнем углу, прикручен на два болта.

Фото в бортжурнале Mercedes-Benz M-Class (W164)

После того как открутил, EGR с места не сдвигался, только путем грубой силы и вбиванием отвертки в щель между двигателем и EGR получилось его вытащить. Долбить пришлось отдуши

Внутри он был похож на афроамериканца, все промыл.
Фото уже после чистки

Фото в бортжурнале Mercedes-Benz M-Class (W164)Фото в бортжурнале Mercedes-Benz M-Class (W164)Фото в бортжурнале Mercedes-Benz M-Class (W164)

Это помогло, ошибки ушли

Так что мойте руки перед и зад :)

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