E39 cold start problem - resolved with a restart?

When my car had a rough cold start last winter I restarted it and it was fine, but the engine icon came on so I scanned it and this is the code I got:

P1345 (according to Google it is: Misfire Cylinder 2 With Fuel Cut-Off)

I just don't know what to do with this info!

Two years ago when the same thing happened in the winter: rough cold start, engine icon came on, my mechanic scanned it and it was (I think; I don't remember the code) cylinder 2 O-sensor. My mechanic said to wait and see if it comes back.

fyi: I changed all spark plugs/coils three years ago (since then I have driven less than 100k).

Any ideas where to look?

GrannyApple said:

So many things.

If you can get a hand on a code reader and scan the codes that do pop up that'll be helpful. It's it's a more capable reader the codes should be stored for a while.

Sent from my 2PS64 using Bimmerfest mobile app

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Something similar happened this morning! Same scenario as last time!

I park underground (temp. 23C). In the morning I got in the car and started it and it ran fine. I drove the gym and parked outside (temp. 21C)

1.5hrs later I left the gym and got in the car--started fine. Soon I realized there's less power when I press on the gas. The RPM was 1,700 while driving at 70km/h, when I pressed on the gas it took the car 2-3 seconds to respond and reach RPM 2,000 and 80km/h! No vibration, no shake, no errors, no codes. However, the engine was nosier than usual when I pressed on the gas. I pulled into a parking lot, turned the car off and then turned it on and everything was fine! The gas throttle responded normally! At 70km the RPM was 1,700 when I pressed on the gas within a second the RPM jumped to over 2,000 (close to 2,500) and the car quickly reached 80km/h!!!

I don't know what's going on! I would love to diagnose what's wrong so I can fix it!

So twice in two weeks this happened! Starting in the morning is fine. I parked outside the gym, 1.5hrs later I start it and there's a loss of power at the low RPM end! No vibration, no error/code--just loss of power/throttle response!

Twice it was solved by me turning off the car and restarting it!

Hi, do you think the CVV can cause this problem?

At 150k in 2009 a cold-weather CVV was installed on my car. Right now my car has 280k on it, so I am wondering if the CVV needs to be replaced. The reason I am suspecting the CVV because last 2 winters I worked close to home and my car never got really warmed up in the drive to work and from work. Since I live in Toronto, Canada it can get really cold in the winter time! Stuck in rush hour so didn't rev up, and worked only 4k from home! One day I noticed there was white mayo like substance under the oil cap! The white substance went away when I decided to take a 2hrs drive non-stop.

I am wondering if the CVV is clogged and it's noticeable in the cold weather. By why restarting the car solves the problem if the CVV is clogged?

Anyway, here's my question: can I delete the CVV? Will it affect the engine/mpg negatively? Will my car pass emission test if the CVV is deleted?