W221 B19/9 and B19/11 'Temperature sensor upstream of DPF'

[Kam84]

Hi everyone,

Need some help please...
I have x2 sensors that showing to be faulty.

1- B19/11 (Temperature sensor upstream of turbocharger) -245.69

2- B19/9 'Temperature sensor upstream of DPF' -220.69

There is something seriously wrong here. The car is in limp mode.
Here I attach a picture of the icarsoft screen

Can somebody shed some light on this please.

Many thanks,

 

[Botus]

check this might help

https://forums.mercedesclub.org.uk/index.php?threads/om642-exhaust-temp-sensor.186197/

sensors die its normal

 

[Kam84]

check this might help

https://forums.mercedesclub.org.uk/index.php?threads/om642-exhaust-temp-sensor.186197/

sensors die its normal

,

I will buy the sensors and update my post once the sensors changed.
Thank you,

Kam

check this might help

https://forums.mercedesclub.org.uk/index.php?threads/om642-exhaust-temp-sensor.186197/

sensors die its normal

 

[Botus]

you know its the same issue as the other guy.

neither of you gave the Merc fault code. You have provided the component identifier. I'm not an expert but B19/11 is either the wiring connector or the physical location on the car. Its not what the car thinks is wrong with itself, just an associated bit that's part of the picture

 

[Botus]

https://forums.mercedesclub.org.uk/...sensor-p2080-merc-w204-c250-cdi.172975/page-2

 

[hmang]

 

[hmang]

159B00

Ill double check with an actual
Diagnostic test tomorrow

 

[hmang]

Better pic that actually shows the codes .

 

[Kev555]

How many codes is stored? looks to be a hell of a lot? Are they all current or historic? At a guess there might be nothing wrong with your sensors? Even though they are negative readings on temperature they are pretty close to the temp difference they should both be reading. How's the battery condition? or is there water in the SAM? some other guys on here more familiar with what you've posted will prob call it better than me.

 

[hmang]

How many codes is stored? looks to be a hell of a lot? Are they all current or historic? At a guess there might be nothing wrong with your sensors? Even though they are negative readings on temperature they are pretty close to the temp difference they should both be reading. How's the battery condition? or is there water in the SAM? some other guys on here more familiar with what you've posted will prob call it better than me.

Yeh dont worry .

Thats a pic from xentry simulation , listing all the fault codes that the system will look for .
in the heading you can see ' Full list of fault codes and events' ......perhaps it should read ...'potential or possible fault codes and events '.

It was the only way i could illustrate the B19/11 code . ( last night without putting me slippers on and going out to run a diagnostic )

The merc fault code ( on the left ) is 159B00 .
The description is in the text to the right
The B19/11 is a merc term for the component that is under test /showing faulty . In this case ..'Temp sensor upstream of the turbocharger ' . There are other temp sensors which is why the description has to be so specific , the other sensors will have a different merc identification .
EG the B19/9 ...that the OP has mentioned , which is a different part in a different location ( upstream of the DPF ).

I'm personally having trouble with B19/11 and asking for help with that in different thread

 

[hmang]

you know its the same issue as the other guy.

neither of you gave the Merc fault code. You have provided the component identifier. I'm not an expert but B19/11 is either the wiring connector or the physical location on the car. Its not what the car thinks is wrong with itself, just an associated bit that's part of the picture

Mr @Botus . Please take a look at posts #8 and #10 .

Hopefully that will explain what i believe to be the situation

 

[hmang]

,

I will buy the sensors and update my post once the sensors changed.
Thank you,

Kam

Does your limp mode go away if you clear the fault down ?

 

[Botus]

I thought he said it doesn't limp.... (oh that's the other post)


why not wipe the faults, go for a 15min drive and see what it shows?
not sure how merc set it up but I can imagine a dead sensor that throws an error won't get over itself if you just disconnect it. wouldn't surprise me if they just said still wrong, "throw the same fault till he fixes it"

 

[hmang]

I think we're getting a bit muddled up here .

@Kam84 is the op of this thread . he apparently has faults showing with 2 sensors B19/9 and B19/11. He has limp mode .

I have a fault 159B00 showing a short circuit fault with temp sensor B19/11 . I have no limp mode . I disconnected my sensor expecting the fault to change from short circuit to open circuit , but it did not .

I think the coincidence of 2 separate members experiencing similar problems simultaneously has confused things

 

[Botus]

seldom coincidence…. kit aging and failing around the same time, is now normal on most cars

 

[Kev555]

Yeh dont worry .

Thats a pic from xentry simulation , listing all the fault codes that the system will look for .
in the heading you can see ' Full list of fault codes and events' ......perhaps it should read ...'potential or possible fault codes and events '.

It was the only way i could illustrate the B19/11 code . ( last night without putting me slippers on and going out to run a diagnostic )

The merc fault code ( on the left ) is 159B00 .
The description is in the text to the right
The B19/11 is a merc term for the component that is under test /showing faulty . In this case ..'Temp sensor upstream of the turbocharger ' . There are other temp sensors which is why the description has to be so specific , the other sensors will have a different merc identification .
EG the B19/9 ...that the OP has mentioned , which is a different part in a different location ( upstream of the DPF ).

I'm personally having trouble with B19/11 and asking for help with that in different thread

Sorry Hmang, my silly mistake as it was late last night getting mixed up between you and original thread starter

 

[Kev555]

I think we're getting a bit muddled up here .

@Kam84 is the op of this thread . he apparently has faults showing with 2 sensors B19/9 and B19/11. He has limp mode .

I have a fault 159B00 showing a short circuit fault with temp sensor B19/11 . I have no limp mode . I disconnected my sensor expecting the fault to change from short circuit to open circuit , but it did not .

I think the coincidence of 2 separate members experiencing similar problems simultaneously has confused things

I had my DPF sensor fail last year. What you have posted sounds familiar in me trying to diagnose which sensor was faulty. I too hoped for an open circuit when disconnecting the sensors in turn but from memory this was not the case and I ended up replacing both before I solved it. The latter DPF sensor being the faulty one.
I had an EML light on But I dont remember van going into limp mode. Your DPF will not regen ATM if one of the sensors is faulty but I'm sure with zentry you already know that