lskA4

Can someone please shade some light on this for me. With the first snow fall and cold weather in Toronto my A4 started acting up all day today. When i scanned it these are the codes it showes:

16684-P0300-Random/Multiple Cylinder Misfire Detected
16686-P0302-Cyl.2 Misfire Detected
16688-P0304-Cyl.4 Misfire Detected

16825-P0441-EVAP Emission Contr.Sys.Incorrect Purge Flow
16891-P0507-Idle Control System Higher than Expected

Is it serious?? and ideas??

1move

iTrader: (1)

There are many reasons for this but it Looks like your coil packs might be acting up, but too early to say, i would clear them and see if they come back

K04-S4

16825 is fairly common during ambient temp changes especially when going below freezing. Best to clear the codes and monitor how fast / often they return. If recurs regularly then may need to test / replace N80 Purge Valve unless purge lines are plugged.

The misfires are a separate issue that should be addressed asap.

kf3506

is your check engine light stay on? I had this twice before, misfires, then check engine light on and stays on. But after the engine warmed up a bit the car drives fine. After a long(30 mins) drive the check engine light would go away on its own.