thats the dpf end the sensor is at the other end of the 2 pipes you refer too. it will likely have 2 flexi pipes going into it with 2 clips on and 2 bolts holding it to the chassis .
if your chassis is a Ducato its right hand side on the chassis above the exhaust in front of the dpf. and look like this...
if its a Merc i dont know where it is but will look similar.
whatever you have you should not need to unscrew the pipes from the dpf unless you got an internal problem as they are just hollow pipes that transfer the air pressuire to the sensor.
fault code P2454 is related to dPF sensor readings so "probably" and most likely means your sensor is at fault. or its a partially blocked dpf.
you will not notice any normal regenation as its controlled by the ECU in simple terms it causes the engine to run hotter thus burning off the soot in the dpf.
the sensor controls when to tell the ecu to do this.
you will need to reset the codes after changing the sensor then the engine light should go out and hopefully stay out.
if your chassis is a Ducato its right hand side on the chassis above the exhaust in front of the dpf. and look like this...
if its a Merc i dont know where it is but will look similar.
whatever you have you should not need to unscrew the pipes from the dpf unless you got an internal problem as they are just hollow pipes that transfer the air pressuire to the sensor.
fault code P2454 is related to dPF sensor readings so "probably" and most likely means your sensor is at fault. or its a partially blocked dpf.
you will not notice any normal regenation as its controlled by the ECU in simple terms it causes the engine to run hotter thus burning off the soot in the dpf.
the sensor controls when to tell the ecu to do this.
you will need to reset the codes after changing the sensor then the engine light should go out and hopefully stay out.