Code P0544

[dn95]

Hi everyone. I have a 2017 E220d with 127k miles. I got this code (P0544) on 6th September. It comes on then goes away after a day or 2. Currently theres no check engine light but it last came on about a week ago. I do about 1.2k-1.5k miles a WEEK. Ive got adblue delete booked tomorrow but dont think this will delete the sensor like it does the o2/nox sensors.

Is this an easy fix where I just buy a new Exhaust Gas Temperature Sensor bank 1? If so, does anyone have the correct part number for this sensor. If not.......

Thanks for all help :)

 

[Larkone]

Loads of good info (fixes, youtube) if you google 'p0544 mercedes'

 

[JoeZ]

Hi everyone. I have a 2017 E220d with 127k miles. I got this code (P0544) on 6th September. It comes on then goes away after a day or 2. Currently theres no check engine light but it last came on about a week ago. I do about 1.2k-1.5k miles a WEEK. Ive got adblue delete booked tomorrow but dont think this will delete the sensor like it does the o2/nox sensors.

Is this an easy fix where I just buy a new Exhaust Gas Temperature Sensor bank 1? If so, does anyone have the correct part number for this sensor. If not.......

Thanks for all help :)View attachment 132138

Hi, I am having a same problem as yours, P0544 is keeps coming, have you fixed it? Which sensor did you replaced?