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Idle Issues on start-up and have codes. Please Help!!!

3K views 1 reply 2 participants last post by  94583 
#1 ·
So i have an issue with my 2000 323Ci.
The car once in a while idles a little odd (goes up and down but has yet to stall)
However driving it for a couple minutes it is alright
But it does not happen all the time but i would like the fix it before it becomes any worse.

I get the following codes.

E3/B1 - Ox.-s.control deviation, bank 1, too large
E4/B1 - Ox.-s.control deviation, bank 2, too large
Shadow-memory:
E3/B1 - Ox.-s.control deviation, bank 1, too large
E4/B1 - Ox.-s.control deviation, bank 2, too large
85/08 - Signal, CAN ASC 3
7F/02 - Activation, solenoid valve, suction-jet pump

Could it be a possible o2 sensor, fuel pump/pressure MAF...
I also just recently got the car a couple months ago and this is the first time it has done this.

Any help would be appreciated
 
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