E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > P2ABC (Boost pressure sensor, electric) NEW CP MAP sensor, code & limp mode still.



Reply
 
Thread Tools Search this Thread
      11-07-2014, 02:29 AM   #1
sparkyblue
Captain
sparkyblue's Avatar
United_States
20
Rep
698
Posts

Drives: E82 135i
Join Date: Jan 2011
Location: USA

iTrader: (7)

Garage List
2008 BMW 135i  [0.00]
P2ABC (Boost pressure sensor, electric) NEW CP MAP sensor, code & limp mode still.

I've had limp modes constantly on my car for the past couple weeks, and at this point I cant even go WOT reliably without the car shuddering and going into limp mode.

I finally got around to replacing my MAP Charge pipe boost sensor with a brand new one, and I was sure that it would have solved my issue.

Turns out, after installing the new MAP sensor. I am STILL getting issues with going WOT. I can get it into limp mode pretty much every time I drive the car.

The codes that are popping are: P2ABC (boost pressure sensor, electric) and occasionally P30FE.

Before I did the swap to the new MAP boost sensor, I was also getting P0238 along with the other two as well.

Note that I have everything clamped down very tight and I am pretty much certain that the connections that my ETS Charge Pipe are making aren't leaking boost. I also haven't touched any of the lower intercooler clamps either since they have been installed, and they were running leak free since install.

I just can't figure it out. The only thing I can think of is I've read that I should check my DP clamp connections and make sure they are 100% free and clear of my wastegates. But I doubt that is the issue because I have been driving the car for a while now (6+ months), and these codes and limp modes have just started occurring more and more frequently since then.

I am clueless as to what I should do now. The codes that COBB are telling me relate back to the CP's MAP/Boost sensor. Aside from the connection/new sensor itself which seems to be working properly until the limp mode and codes pop, I don't know what else it could be!!

Please give me a hand. I am stumped, and was so stoked to have the car up and running in a proper manner.

I can't even drive it the way it's meant to be driven!

I appreciate all the help.

Engine Mods:
Cobb Stage2+ Drive
ETS Charge pipe w/ Tial Q BOV
VRSF Intercooler 7"
VRSF Downpipes
BMS DCI

Replaced Recently:
2x VANOS Solenoids (less than 5k ago)
1x T-MAP sensor in the intake manifold (less than 5k miles ago)
1x MAP/Boost sensor in the charge pipe (just now)
Appreciate 0
      11-07-2014, 11:46 AM   #2
IBOOSTU
Lieutenant
19
Rep
439
Posts

Drives: AW/CR 6MT 335I
Join Date: Oct 2013
Location: CHAI TOWN

iTrader: (0)

dude im having the same problem i cant peak boost over 10psi
last night i did full throttle and went into limp mode i replaced my spark plugs, recently
have a jb4 , rissland racing downpipes,
Appreciate 0
      11-07-2014, 12:03 PM   #3
Sgop335
Major
Sgop335's Avatar
United_States
161
Rep
1,169
Posts

Drives: 2007 335i Coupe sport pkg
Join Date: Jun 2014
Location: MD

iTrader: (1)

Quote:
Originally Posted by sparkyblue View Post
I've had limp modes constantly on my car for the past couple weeks, and at this point I cant even go WOT reliably without the car shuddering and going into limp mode.

I finally got around to replacing my MAP Charge pipe boost sensor with a brand new one, and I was sure that it would have solved my issue.

Turns out, after installing the new MAP sensor. I am STILL getting issues with going WOT. I can get it into limp mode pretty much every time I drive the car.

The codes that are popping are: P2ABC (boost pressure sensor, electric) and occasionally P30FE.

Before I did the swap to the new MAP boost sensor, I was also getting P0238 along with the other two as well.

Note that I have everything clamped down very tight and I am pretty much certain that the connections that my ETS Charge Pipe are making aren't leaking boost. I also haven't touched any of the lower intercooler clamps either since they have been installed, and they were running leak free since install.

I just can't figure it out. The only thing I can think of is I've read that I should check my DP clamp connections and make sure they are 100% free and clear of my wastegates. But I doubt that is the issue because I have been driving the car for a while now (6+ months), and these codes and limp modes have just started occurring more and more frequently since then.

I am clueless as to what I should do now. The codes that COBB are telling me relate back to the CP's MAP/Boost sensor. Aside from the connection/new sensor itself which seems to be working properly until the limp mode and codes pop, I don't know what else it could be!!

Please give me a hand. I am stumped, and was so stoked to have the car up and running in a proper manner.

I can't even drive it the way it's meant to be driven!

I appreciate all the help.

Engine Mods:
Cobb Stage2+ Drive
ETS Charge pipe w/ Tial Q BOV
VRSF Intercooler 7"
VRSF Downpipes
BMS DCI

Replaced Recently:
2x VANOS Solenoids (less than 5k ago)
1x T-MAP sensor in the intake manifold (less than 5k miles ago)
1x MAP/Boost sensor in the charge pipe (just now)
Sorry to hear that. Have you tried replacing all vacuum lines? didnt see it in the post.
__________________
Space grau metallic / Dakota red leather
Own 93oct tune w MHD, 3rd, 65f
http://www.datazap.me/u/sgop335/3rd-...=0&data=4-5-22
370hp, 390lbft virtual dynojet
Appreciate 0
      11-08-2014, 02:20 AM   #4
sparkyblue
Captain
sparkyblue's Avatar
United_States
20
Rep
698
Posts

Drives: E82 135i
Join Date: Jan 2011
Location: USA

iTrader: (7)

Garage List
2008 BMW 135i  [0.00]
Quote:
Originally Posted by IBOOSTU View Post
dude im having the same problem i cant peak boost over 10psi
last night i did full throttle and went into limp mode i replaced my spark plugs, recently
have a jb4 , rissland racing downpipes,
I have 6 new OEM plugs & sockets and I planned on doing it a couple months back. I'll knock those out and report back. But I have a feeling they aren't that, as the codes don't really pertain to cylinder misfires or such.

But my plugs do have over 30K on them so it's about time I swap them out anyways. Thanks for the suggestion.

Quote:
Originally Posted by Sgop335 View Post
Sorry to hear that. Have you tried replacing all vacuum lines? didnt see it in the post.
Which vacuum lines are you referring to? I have read somewhere that I should probably take a look at the boost solenoids or the solenoids that control the wastegates themselves. But I am not quite sure of the procedure or where to locate those lines in the engine bay itself.

Any to everyone else of e90post, any other suggestions?

I am puzzled because sometimes it works fine too. Like I did a few hard Stage2+ Drive pulls today and it didn't pop. But I can still get it to limp every so often when I romp on it.

If I am driving normally or not boosting very hard, everything seems golden. The car drives fine and idles/runs just fine. Boost comes on strongly and everything seems working as it should.

I replaced the Charge Pipes Boost Sensor (MAP) sensor with a new one and sometimes I still get the code to pop!

Maybe I need to replace the the wire that plugs into the MAP sensor itself. Where does the wire run from and how can I go about replacing it just for peace of mind?
Appreciate 0
      11-08-2014, 10:39 AM   #5
Jklad
Major
Jklad's Avatar
United_States
115
Rep
1,175
Posts

Drives: 2007 335i Coupe
Join Date: Nov 2010
Location: Palatine, IL

iTrader: (0)

Quote:
Originally Posted by sparkyblue
Quote:
Originally Posted by IBOOSTU View Post
dude im having the same problem i cant peak boost over 10psi
last night i did full throttle and went into limp mode i replaced my spark plugs, recently
have a jb4 , rissland racing downpipes,
I have 6 new OEM plugs & sockets and I planned on doing it a couple months back. I'll knock those out and report back. But I have a feeling they aren't that, as the codes don't really pertain to cylinder misfires or such.

But my plugs do have over 30K on them so it's about time I swap them out anyways. Thanks for the suggestion.

Quote:
Originally Posted by Sgop335 View Post
Sorry to hear that. Have you tried replacing all vacuum lines? didnt see it in the post.
Which vacuum lines are you referring to? I have read somewhere that I should probably take a look at the boost solenoids or the solenoids that control the wastegates themselves. But I am not quite sure of the procedure or where to locate those lines in the engine bay itself.

Any to everyone else of e90post, any other suggestions?

I am puzzled because sometimes it works fine too. Like I did a few hard Stage2+ Drive pulls today and it didn't pop. But I can still get it to limp every so often when I romp on it.

If I am driving normally or not boosting very hard, everything seems golden. The car drives fine and idles/runs just fine. Boost comes on strongly and everything seems working as it should.

I replaced the Charge Pipes Boost Sensor (MAP) sensor with a new one and sometimes I still get the code to pop!

Maybe I need to replace the the wire that plugs into the MAP sensor itself. Where does the wire run from and how can I go about replacing it just for peace of mind?
There's a thread on here where the all the vacuum lines shown in detail, on phone so can't link, but if you search for 'vacuum lines' should come up. There's a number of lines, if your over 70k I would just replace all of them to start. If that doesn't fix it, you can start looking deeper.
Appreciate 0
      11-08-2014, 11:49 AM   #6
335NJ
Colonel
United_States
342
Rep
2,898
Posts

Drives: 2008 335i 6MT E90
Join Date: Feb 2014
Location: NJ/Philadelphia Suburbs

iTrader: (1)

I'm on mobile so maybe I've missed this, but has anyone suggested replacing the boost solenoids? ECS Tuning has them listed in the vendor section I believe, or jump on their site.

Sorry if that's already been attempted!
Appreciate 0
      07-06-2016, 06:56 AM   #7
dbudh001
Lieutenant
11
Rep
521
Posts

Drives: 2007 bmw 3351
Join Date: May 2010
Location: miami

iTrader: (1)

Sorry to bring this thread back from the dead but having same exact issues. What was the fix same mode minus charge pipe
Appreciate 2
      07-06-2016, 07:27 AM   #8
jtswole
First Lieutenant
29
Rep
365
Posts

Drives: 335i
Join Date: Mar 2014
Location: FL

iTrader: (1)

Boost solenoids.
__________________
Cam only...
Appreciate 0
      07-06-2016, 05:09 PM   #9
sparkyblue
Captain
sparkyblue's Avatar
United_States
20
Rep
698
Posts

Drives: E82 135i
Join Date: Jan 2011
Location: USA

iTrader: (7)

Garage List
2008 BMW 135i  [0.00]
Sorry I didn't update this, but the problem was finally determined to be boost solenoids.

Replaced them and car has been boosting perfectly with no limp modes.
Appreciate 0
      07-27-2016, 12:24 AM   #10
dbudh001
Lieutenant
11
Rep
521
Posts

Drives: 2007 bmw 3351
Join Date: May 2010
Location: miami

iTrader: (1)

Thanks for responding guys. So here's the thing. I took off the tune ( Cobb ). And went back to stock map The codes no longer come up. Any siggestions at this point ?
Appreciate 0
      03-17-2017, 11:34 PM   #11
dbudh001
Lieutenant
11
Rep
521
Posts

Drives: 2007 bmw 3351
Join Date: May 2010
Location: miami

iTrader: (1)

just to update for the community ---- it was in fact boost solenoids ... they go bad - best to change them both at once
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
Forum Jump


All times are GMT -4. The time now is 01:20 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
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