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W204 C200cdi P2453 fault code

Cushenan

New Member
Joined
Mar 17, 2019
Messages
7
Location
Ireland
Car
W204 c220 cdi
Having an issue with a c200 cdi where it brings up this code and goes into limp mode.

The description my Delphi clone gives is diesel particulate filter pressure sensor ‘A’ circuit range/performance.
Im guessing the dpf is clogged. Not sure if it has been completing regens however the car does 50mile commutes daily so theoretically it should.

I’ve read that a faulty thermostat can cause issues with regens, however temperature gauge seems normal. Anything else likely to prevent regens?

Has anyone removed the dpf on these and manually cleaned them out? I’ve done this on Peugeots in the past with good results so that could be an option.

Upon clearing the code the automatic gearbox seems to remain in limp mode until i reset the adaptives. Is this normal?
 
The DPF Pressure sensor is of the differential type where exhaust pressure is compared before and after the DPF to check for blockage. Its usually mounted away from the exhaust and connected to it by 2 flexible pipes. The sensor can go faulty or the connecting pipes can block. I would be checking the sensor and pipes first before spending money on a DPF.
 
EXHAUST SYSTEM FOR FOUR-CYLINDER DIESEL VEHICLES MERCEDES C-KLASSE [Car] [CHASSIS] (EUROPA)
ITEM 370
B49218000039.110420.png
 

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