NOX deactivation of EGR valve P2BAC

[Alex Stone]

Good Morning Guys

Please be gentle and i apologise if this has already been spoke about but the more i read i get further away.

Got a NOX fault that wont clear, vehicle has had a new EGR valve previous to this. Drive the vehicle for 15 miles no lights then goes limp mode. The NOX fault (p2BAC) will not clear and only visible in EOBD not through main Mercedes fault reading.

Also have P00BC62 - Intake air system / charge air system - A signal below the permissible limit valve exists

Has any got any information or a thread that has been resolved.

Cheers Alex

 

[Steve@Avantgarde]

Sounds like you have an air leak on the engine intake system.

 

[Alex Stone]

Sounds like you have an air leak on the engine intake system.

Thanks for the reply,

I have smoke tested the system and no leaks visible but will double check

Cheers

Alex

 

[LostKiwi]

Take the pipes off and visually inspect. Often a boost pipe won't leak until it has pressure. It's a common fault.

 

[Alex Stone]

Take the pipes off and visually inspect. Often a boost pipe won't leak until it has pressure. It's a common fault.

Ah ok perfect i will have a look today thanks