Audi A6 Secondary Air Injection System

There are a few things to inspect when this code comes up.

Audi a6 secondary air injection system. Fits a5 a6 a7 q5 q7 s4 s5 s6 sq5 air injection system air pump repair or replace a failed air injection pump or secondary air pump will often have no noticeable symptoms beyond a check engine light but it does cause your 2012 audi a6 to operate inefficiently and produce higher emissions. Vacuum is then applied to both air combination valve diaphragms which. Clean secondary air injection ports in the cylinder head s if obstructed with carbon see special notes special notes when found in the following nar north american market audi models listed below check to see if tpi 2033001 is applicable. The codes are for the secondary air injection systems and the 491 and 492 are for banks 1 and 2.

26 50 secondary air system the secondary air system is designed to enable catalytic converter to heat up and reach its operating temperature more quickly. Audi a6 sedan 1998 2004 audi a6 avant 1999 2004 audi allroad quattro 2001 2004 audi s6 avant 2002 2004 audi rs6 2003 2004 4 2 liter v8 5v engine mechanical engine code s. Shop audi a6 secondary air injection pump hose. 4 2 system liter emission oem audi part 4f0133817l 4f0 133 817 l.

P0411 audi meaning an air pump is used on the vehicle to lower tail pipe emissions on start up. Bas just a test. The first is to inspect the system checking for a proper seal. The secondary air injection system commonly found on audi bmw porsche and vw vehicles and may be found on other vehicles features an air pump an exhaust manifold an input check valve vacuum control switch an electrical input circuit for the vacuum control switch and tons of vacuum hoses.

I know it has been discussed on the page before but i wanted to combine several threads and add more info i have learned about the system.