2001 audi a4 1.8t rodknock on start up
 

I have a 2001 audi a4 1.8t quattro and whenever i start it up it has rod knock for about 3 to 4 seconds then goes away and its back to its normal lifter tick, it also has been throwing the code p0011 every few days, i was thinking maybe it was a oil pump but odk, any help is appreciated