i drive a 2000 S4 TT quattro and and i got these codes that i still dont really understand whats wrong with my car.

P0300 Random/Multiple Cylinder Misfire Detecteted
and
P1131 Bank2-Sensor1 Internal Resistance too High

for the random misfire i already changed the spark plugs and had a friend check the ignition coils so what else can be triggering it?

and i have no idea what the second one is [:@]

anyone know what it is or advice in general? thanks

 

I believe the heater element for the O2 sensor is loose or disconnected.

 

Random misfire? No specific cylinder? Fix that o2 sensor first then gofrom there

 

nope random/multiple.... if it was cylinder 1 it would say P0301 and so on...

 

Fix the O2.