SES - P0300, P1347, P1348, and P1349

[LeiZ]

Hi Experts,

Post it for a friend of mine in VA. He just bought a 03 3.0i AT from a dealer in NC recently, and has the following problems. Your inputs are greatly appreciated.

"'03 BMW X5: a misfire issue was noticed along with SES light on. OBD II reads P0300, P1347, P1348, and P1349. After a week of observation, it is for sure that this symptom occurs either in the morning or in the evening when the car has been sitting there for a long time and especially when the weather is cold. During the day, as the weather warms up a little, the symptom may seem to disappear with slight vibration when idle in drive. Yesterday, the SES light cleared on its own when driving, but this morning, the misfire came back. "

Thanks a lot!