Loss of power

[LuisDG]

Hi all, i have a 2018 E220d and recently i had the problem with the NOx sensor .. i changed it, the car was allright for 2 days and then is started to feel again some loss of power .. i put a diagnostic on it but there is not any error or something . Before when i was puting my foot on the throttle i was feeling the torque but now not . Anybody experienced this ?

 

[Dodipops]

Nox sensors need to be learned to the vehicle after fitting using suitable diagnostic. Although I can’t imagine that being the fault without it logging some sort of error.