diagnostics code 17446

[stuart]

hi does anyone no what the code 17446 means its coming up on my diagnostics reader

 

[pgodoe]

http://www.a2oc.net/forum/showthread.php?t=4870

 

[Sarge]

Have a look at this thread Pal.


http://www.a2oc.net/forum/showthread.php?t=6898&highlight=sensor+nox

 

[stuart]

thanks for the rapid response all i need to do now is find out what a nox sensor is

 

[stuart]

nox sensor

hi is the nox sensor the same as a lambda sensor or is it two different things , i just dont have a clue

 

[spike]

Hi Stuart
The lambda sensor measures oxygen in the exhaust gases and the ECU processes this info and continually adjusts the fuelling to ensure optimum air / fuel ratio.
The NOX sensor measures the oxides of nitrogen in the exhaust gas to determine when the EGR valve should be activated. In simplistic terms, NOX is produced when combustion temperatures are high and the EGR valve bleeds exhaust gas into the cylinders to reduce combustion efficiency which in turn lowers combustion chamber temperatures.

Cheers Spike

 

[stuart]

cheers spike just found out that my mates brother works at audi and hes gonna check it out so fingers crossed