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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 09-29-2010, 02:09 PM   #41
330Bryan
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Join Date: Aug 2007
Location: Houston, TX
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My Ride: 2010 BMW E92 Coupe
Quote:
Originally Posted by aniolPL View Post
JEEZ!!! I have exactly the same error codes as you ( after changing valve cover gasket and testing being low on fuel) Did you fix this problem?
After my last post when I changed the fuel filter the e3,e4,ca,cb codes were gone for a couple of months. then I got one stating my post cat o2 sensor wasn't heating sufficiently. replaced that and have been code free since.
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Old 10-01-2010, 06:19 PM   #42
q0192837465
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i always wonder. Does it only happen when u'r in "D"? Does it go away when u go Neutral or Park?
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Old 08-30-2013, 08:48 AM   #43
Alexdude515
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Join Date: Sep 2012
Location: Maryland
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My Ride: 2000 BMW E46 328Ci
Check the CCV/oil separator and its associated vacuum lines. I had a very rough idle (shaky and sounded like a badly cammed v8 with intermittent pinging sound coming from the intake manifold). I pulled codes for O2 sensor malfunction, p1188 and 1189 stating fuel supply issue and every cylinder misfire. It was only rough in idle but when i drove above idle, the car ran fine. I narrowed it down to a failing/failed CCV/oil separator and there was a crack in one of the 4 hoses connected to it. If you want to test this, take carb cleaner and spray it around where the hoses connect to the CCV. Hope this helps!
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Old 08-30-2013, 08:50 AM   #44
Alexdude515
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Join Date: Sep 2012
Location: Maryland
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My Ride: 2000 BMW E46 328Ci
Solution?

Check the CCV/oil separator and its associated vacuum lines. I had a very rough idle (shaky and sounded like a badly cammed v8 with intermittent pinging sound coming from the intake manifold). I pulled codes for O2 sensor malfunction, p1188 and 1189 stating fuel supply issue and every cylinder misfire. It was only rough in idle but when i drove above idle, the car ran fine. I narrowed it down to a failing/failed CCV/oil separator and there was a crack in one of the 4 hoses connected to it. If you want to test this, take carb cleaner and spray it around where the hoses connect to the CCV. Hope this helps!
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Old 09-03-2013, 10:33 PM   #45
Jsmk23
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Join Date: Aug 2011
Location: Palm Springs, CA
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My Ride: 02 325i-JapanRot Red
Any suggestions to my problem here?

Codes I have are:
P0430
P0174
P0171
P1085

I have replaced fuel filter, fuel pump, spark plugs, EVAP purge valve
Cleaned: Mass Air Flow sensor, Idle control valve and Throttle body

I also noticed that my precat o2 sensor is covered in oil (possibly from VCG).
Was going to change my VCG this weekend and going to order new o2 sensor right after.

Any suggestions?
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