DPFE Sensor Location?

[Vito V6]

Got error code P1402- DPFE hose upstream clogged/off & P0473- Exhaust pressure sensor circuit A high.
Causes my Vito w639 120cdi 3litre v6 to go into limp mode until code deleted!

Was advised to replace the dpfe sensor & the 2 Hoses with original parts as cheap parts fail & the Hoses also get clogged over time.

I've heard it's tricky to do on this engine & heat shield needs to be removed??
But where is the sensor located exactly?? Any pics would be great

 

[grober]

this might help?
http://www.benzworld.org/forums/c219-cls-class/1648994-dpf-sensor-location.html

but there were numerous modifications to the exhaust system and sensor locations as MB strived to keep up with more stringent emissions. Best go into your local MB commercial dealer parts counter complete with your chassis no - they should be able to help with part nos and location

 

[GWhittell]

Are you sorted now?

I have a Viano V6 (204 Bhp) and know where the pressure differential sensor and the back pressure sensors are...

 

[VITOMUG]

Got error code P1402- DPFE hose upstream clogged/off & P0473- Exhaust pressure sensor circuit A high.
Causes my Vito w639 120cdi 3litre v6 to go into limp mode until code deleted!

Was advised to replace the dpfe sensor & the 2 Hoses with original parts as cheap parts fail & the Hoses also get clogged over time.

I've heard it's tricky to do on this engine & heat shield needs to be removed??
But where is the sensor located exactly?? Any pics would be great

Hi its drivers side where in exhaust turns up the back of the engine has two hoses to it
and its up behind the exhaust heat shield fixed to the side on the inner wing

 

[grober]

Pressure sensor 250 in diagram is part no A6429050100 but check against chassis no.
Genuine Mercedes-benz DPF Exhaust Pressure Sensor Diesel Om642 A6429050100 | eBay