Started the car at 2F (-17C) today. It didn't like it

Service engine light came on and Warnig poped on the idrive to tell me to drive moderately and Cat converter fault.

Went away after the car warmed up. Anyone else?

Was the converter frosen? water inside? condencate? The car was parked overnight at pretty cold temps

Does the car store the faults? going to dealer on Wednesday will check

 

I had the same problem a few weeks ago. I took my car in and they changed all 6 ignition coils.

 

I had the same problem with my car a few ago. They change all 6 of my ignition coils. I drive my car pretty hard. I'm a real BMer driver. They also said a more heavy duty wiring was installed. Sounds like you have the same problem. It was a quick fix.

 

Haha, dont have those cold start problems. It's nice living in Florida