2015 E220d S212 P247115 error code

[Meguinness]

hi guys ,hope you can help me figuring out how to solve this problem , ...MIL light will come up after few restart ...after clearing errors obviously is coming back....
Im testing all the temperature sensors using xentry...the only one not able to communicate with is the B19/7 ....even if xentry is pointing P247115 error code to B16/15 that i tested and working fine.
any clue where B19/7 is located?
vin: WDD2122012B197777
thanx

 

[alexanderfoti]

In the exhaust manifold under air box.

 

[Meguinness]

In the exhaust manifold under air box.

Tested both sensors and working ok....non of them are SENSOR 4 , so will look at the one past the catalytic converter....as that what Xentry says that is the faulty one even when tested with Xentry it showing working.
I assume is accessible by removing the engine undertray ? Ta

 

[alexanderfoti]

Tested both sensors and working ok....non of them are SENSOR 4 , so will look at the one past the catalytic converter....as that what Xentry says that is the faulty one even when tested with Xentry it showing working.
I assume is accessible by removing the engine undertray ? Ta
View attachment 88083

This test screen shows its faulty.

Yes it's a straightforward change

 

[Meguinness]

This test screen shows its faulty.

Sorry I took the photo when was cooling down.....this .. do u this it still low? The max I seen was 100c

 

[alexanderfoti]

Looks fine!

 

[Meguinness]

Looks fine!

So why it keeps saying that that is the sensor that is malfunctioning? Any clue? Thank you

 

[alexanderfoti]

Where is the fault code on Xentry? You show every screen except for the fault code

 

[Meguinness]

Where is the fault code on Xentry? You show every screen except for the fault code

 

[alexanderfoti]

Probably faulty sensor.
Second screens shows substitute values will be shown if there is a current fault code

 

[Meguinness]

Probably faulty sensor.
Second screens shows substitute values will be shown if there is a current fault code

Sorry..can you please explain better for me Thank you

 

[mioba]

If you have xentry and are asking for advice then hmmmmmm.
If xentry tells you it quacks like a duck, walks like a duck, then it is a cat

 

[supernoodle]

If ever you're unsure which sensor is which, just unplug one and see what codes you get.
As you already have an open circuit fault, if you got the correct sensor you won't see any new codes.
If you got the wrong one you'll now have two open circuit faults. Plug it back in and try another.

 

[Buck2003]

I'm no specialist but would if thought 2° difference between those values would be within tolerance.
As for the other messages I don't believe a thing Mercedes tell me via OBDll...I mean a head light fault causes a glowplug DTC faults and warning screens and so on.