Posted by Mark CarterMark Carter
on September 30, 2011, 7:10 pm, in reply to "Re: Audi RS4 Secondaryair system fault"
There are many ways to move forward with this system but a simple way to test the system may be to replace the motor with a 55 watt bulb and then start the vehicle from cold.
Regards Mark
Modern cars, Its all wizardry and witchcraft
Message Thread 
Audi RS4 4.2 2006 - P0491 Secondary air system fault bank 1 # - Tom Poulton September 29, 2011, 11:27 am
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