Po546 fault code

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Halldoc

New Member
Joined
Oct 6, 2020
Messages
2
Location
Co Durham
Car
C220 cdi blue efficiency
I have a w204 c220 cdi blue efficiency 2014 it has done only just under 60000 miles, I recently got fault code 2080 bank one sensor one so had this checked and changed the egt sensor with genuine mercedes part, now I have fault code p0546 the car is starting fine although the engine light is on, there is a hessitation intermittently at around 3200 rpm when accelerating hard, there also seems to be a slight reduction in power. The automatic gear change seems to be less smooth also. This happened after a long drive to North devon and back around 900 miles.
I have recently added forte regeneration fuild to a full tank of fuel to make sure the dpf is not clogged. Does anyone know why this fault would still be occuring or what could be causing this as I do not want to have to take this to mercedes and have my eye's removed.
Thanks
 

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