E90Post
 


The Tire Rack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Shuttering on startup & sometimes on freeway



Reply
 
Thread Tools Search this Thread
      02-07-2013, 10:56 AM   #1
AltecBX
Colonel
AltecBX's Avatar
United_States
323
Rep
2,663
Posts

Drives: BMW 335xi Sedan; BMW M3 ZCP
Join Date: Nov 2007
Location: NYC

iTrader: (0)

Garage List
2018 BMW M3 ZCP  [0.00]
2007 BMW 335Xi  [0.00]
Exclamation Shuttering on startup & sometimes on freeway

So every time I start the car I get ECU codes: P2CAB & P2CA7. Occasionally I also get P2DED, H2CAB & H2C3E with the codes above. I have remove the tune I had installed, and wondering what could it be. This happens all the times when starting the car and sometimes it happens on the freeway especially when I accelerate quickly.

Mods: AR Design Catless DP | BMS Dual Cone Intake | 235/265 19" Michelin Pilot SS
Appreciate 0
      02-07-2013, 11:23 AM   #2
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

P2CAB and P2CA7=lambda/precat o2 sensors, my car threw the same two codes when mine went bad a few months back. The car will start to misfire on cold start and generally drive poorly, which makes perfect sense seeing as how it'll have a tough time getting AFRs correct. If you're under warranty just take it in (unmodded obviously), if not, O2 sensors aren't too brutal from a cost standpoint. Any competent shop can take care of it quickly.
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      02-07-2013, 11:28 AM   #3
AltecBX
Colonel
AltecBX's Avatar
United_States
323
Rep
2,663
Posts

Drives: BMW 335xi Sedan; BMW M3 ZCP
Join Date: Nov 2007
Location: NYC

iTrader: (0)

Garage List
2018 BMW M3 ZCP  [0.00]
2007 BMW 335Xi  [0.00]
Thanks. I read your post on this before posting this question. The reason I posted this up, is because I also get the other codes as well and it happens on the highway as well.
Where can I get a pair of O2 sensors for a good value as I'm out of warranty?
Appreciate 0
      02-07-2013, 04:03 PM   #4
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

Quote:
Originally Posted by AltecBX View Post
Thanks. I read your post on this before posting this question. The reason I posted this up, is because I also get the other codes as well and it happens on the highway as well.
Where can I get a pair of O2 sensors for a good value as I'm out of warranty?
I'll check around when I get home, but Turner Motorsports and ECS are two good OE part suppliers that come off the top of my head. Mine was replaced under CPO, but I considered just buying one myself to avoid removing the mods. TBH I'm not sure what the other codes are..
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      02-08-2013, 09:36 AM   #5
AltecBX
Colonel
AltecBX's Avatar
United_States
323
Rep
2,663
Posts

Drives: BMW 335xi Sedan; BMW M3 ZCP
Join Date: Nov 2007
Location: NYC

iTrader: (0)

Garage List
2018 BMW M3 ZCP  [0.00]
2007 BMW 335Xi  [0.00]
Thanks.
So are ppl suggesting these codes has to do with replacing the O2 sensors?
What about getting the BMS Downpipe Fix? Do you guys think this can fix the problem?
Appreciate 0
      02-08-2013, 10:07 AM   #6
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

Quote:
Originally Posted by AltecBX View Post
Thanks.
So are ppl suggesting these codes has to do with replacing the O2 sensors?
What about getting the BMS Downpipe Fix? Do you guys think this can fix the problem?
The first two codes mean your precat o2s are not reading correctly, which almost always means they're fried. To my knowledge, replacing the faulty part is the only way around that code. The DPfix is used by forum members to pass emissions testing, it is not advised to drive around with it on for long periods of time. If you are tuned the tune should have an autoclear mode that would get rid of the CEL from your catless downpipes, but that has nothing to do with O2 sensors possibly biting the dust. IF your precat O2s are bad, you need to replace them, there's no way I know of to cover up the issue.
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 06:51 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST