BMW 116i E81 Nox sensor problem 

We change Nox sensor and new bougies and until now no problem at all.Afcourse we change also oil with new filter.

@@MrMiniek007 new nox sensor and what also? bougies?

@@kacper2563 maybe sparkplugs

if you ask me the biggest benefit of changing a faulty nox sensor is getting the fuel consumption as low as possible, bad sensor=high fuel consumption. it also makes the engine run at his best, keeping wear and tear as low as possible. i would immediatly change it

i'm going to replace the NOX sensor ..mine is with cold engine and the fuel consumption has increased too much 😞

No we just replace the original nox sensor and we run the car.Until now no problems at all, car start every day without any problems

Depends on the error code

Maybe in your engine is broken head gasket?Try to buy special coolant tester to check the head gasket

I dont remember anymore.Now no error and i cant check what error was

Which year?

@@MrMiniek007 mine is 2008

You have two sensors, one before the catalytic convertor and one after the catalytic convertor. Usually the one that's gone bad is the NoX sensor which is the one before the catalytic convertor (known as bank 1), easy replacement and the part is pretty cheap.

@@ionutgabrieldogariu i got a unbranded nox sensor that didn't work ,now i'm waiting a delivery a second hand same the original.