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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > P30FE CEL after Vanos Solenoid Replacements.



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      05-23-2012, 10:51 AM   #1
mpower3o2
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P30FE CEL after Vanos Solenoid Replacements.

Having issues with my N54 335i.

Done my fair share of research and didn't come up with anything concrete.

Basically under WOT in 3rd gear I'll get the P30FE CEL (High Boost, Clamp Bank 1) along with Fuel pump plausability. WOT in 1st,2nd, 4th,5th,6th have no issues. I recently changed my Intake & Exhaust Vanos solenoids due to another issue. I'm all out of ideas and was hoping someone here could shed some light on this subject.

Car has following mods:

- Cobb Stg II+ FMIC Sport w/ Stock Throttle (v301)
- Dinan Intercooler & Oil Cooler
- Vishnu Exhaust System
- VRSF Downpipes
- DCI

Thanks in Advance!
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      05-23-2012, 11:21 AM   #2
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boost leak code
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      05-23-2012, 12:17 PM   #3
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Quote:
Originally Posted by AU335i View Post
boost leak code
these are the codes I pull:



P2A87 - Vanos Code (already took care of that. Hasn't came back since I replaced both solenoids)
P2AAF - Fuel Pump Plausability
P30FE - High Boost, Clamp Bank 1
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      05-23-2012, 12:48 PM   #4
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Quote:
Originally Posted by mpower3o2 View Post
these are the codes I pull:



P2A87 - Vanos Code (already took care of that. Hasn't came back since I replaced both solenoids)
P2AAF - Fuel Pump Plausability
P30FE - High Boost, Clamp Bank 1
do a 3rd gear pull and datalog it using the default log list... start at 2k and go till redline or at least above ~6000 if you can...
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      05-23-2012, 12:51 PM   #5
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Quote:
Originally Posted by AU335i View Post
do a 3rd gear pull and datalog it using the default log list... start at 2k and go till redline or at least above ~6000 if you can...
Thing is, while I am in 3rd gear and WOT. I wont' be able to get over 5k rpm due to the 30FE code. You can see the car boost, then decrease in boost, and feel sluggish. That's when the code kicks in and puts the car into reduced power.
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      05-23-2012, 12:53 PM   #6
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Quote:
Originally Posted by mpower3o2 View Post
Thing is, while I am in 3rd gear and WOT. I wont' be able to get over 5k rpm due to the 30FE code. You can see the car boost, then decrease in boost, and feel sluggish. That's when the code kicks in and puts the car into reduced power.
sounds like a boost leak lol ... check your connections. most likely a FMIC coupler popped off...


if you do a datalog of the event, you'll definitely know if it's a boost leak by checking WGDC.
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      05-23-2012, 12:55 PM   #7
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Quote:
Originally Posted by AU335i View Post
boost leak lol ... check your connections. most likely a FMIC coupler popped off...
I'll be sure to take a look @ it.

Wouldn't this happen if I was to WOT in any of the gears? Thinking it could be the wastegate solenoids?
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      05-23-2012, 12:57 PM   #8
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Quote:
Originally Posted by mpower3o2 View Post
I'll be sure to take a look @ it.

Wouldn't this happen if I was to WOT in any of the gears? Thinking it could be the wastegate solenoids?
does it not happen when you go WOT in 2nd?
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      05-23-2012, 01:07 PM   #9
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Quote:
Originally Posted by AU335i View Post
does it not happen when you go WOT in 2nd?
WOT under 2nd gear I get no cel. 3rd gear WOT as soon as I hit around 5k RPM, I see the boost go down a bit, then car hits reduced power. P30FE comes up.
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      05-23-2012, 01:46 PM   #10
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Quote:
Originally Posted by mpower3o2 View Post
WOT under 2nd gear I get no cel. 3rd gear WOT as soon as I hit around 5k RPM, I see the boost go down a bit, then car hits reduced power. P30FE comes up.
not sure then but in either case I'd datalog the pull in 3rd gear and post it here or send it to COBB.
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      05-23-2012, 01:53 PM   #11
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Quote:
Originally Posted by AU335i View Post
not sure then but in either case I'd datalog the pull in 3rd gear and post it here or send it to COBB.
Thanks for all the help AU335i.

When you say datalog, which one should I be logging? Sorry about the dumb question, I'm new to the whole AccessPort scene
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      05-23-2012, 02:27 PM   #12
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Quote:
Originally Posted by mpower3o2 View Post
Thanks for all the help AU335i.

When you say datalog, which one should I be logging? Sorry about the dumb question, I'm new to the whole AccessPort scene
make sure the datalog list is on default. when you scroll through the "Monitor" options there should be "Reset Datalog List" at the bottom... if it isn't highlighted/white letters than you're on default parameters... if it is in White letters then go ahead and reset the list of parameters to log back to Default settings.

then just datalog normally and graph the log afterwards.

Search for Zasquatch's datalog grapher tool to make it easier to graph.
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      05-23-2012, 05:29 PM   #13
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That's probably not a boost leak, that's overboost. I had the exact same issue at the track a few weeks ago. A few other people are throwing the same codes but usually at the track after pushing the car pretty hard. For me, it would usually happen after about 20 minutes into a session. Something's causing the actuator arms to malfunction, could be bad arms or something software related. I passed on all my info to Cobb.
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      05-23-2012, 06:09 PM   #14
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Quote:
Originally Posted by BMWsky View Post
That's probably not a boost leak, that's overboost. I had the exact same issue at the track a few weeks ago. A few other people are throwing the same codes but usually at the track after pushing the car pretty hard. For me, it would usually happen after about 20 minutes into a session. Something's causing the actuator arms to malfunction, could be bad arms or something software related. I passed on all my info to Cobb.
If you wouldn't mind, could you keep this thread updated when you hear back from Cobb? It'd be greatly appreciated!
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      05-23-2012, 08:22 PM   #15
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Quote:
Originally Posted by mpower3o2 View Post
If you wouldn't mind, could you keep this thread updated when you hear back from Cobb? It'd be greatly appreciated!
Absolutely, there's a few of us having this problem.
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      06-06-2012, 02:39 PM   #16
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Quote:
Originally Posted by mpower3o2 View Post
If you wouldn't mind, could you keep this thread updated when you hear back from Cobb? It'd be greatly appreciated!

Any update on this thread? Having the same issue and I'm throwing the p30ff (yes checked everything and smoke tested, so i'm thinking solenoids)
Also threw the fuel pump plausibility Running s1+fmic 401 agg st
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      06-15-2012, 08:46 PM   #17
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+1, I just got a VANOS fault code & am going to replace both of them. No problems with overboost/limp mode. I'm running Stage 2+ Drive until it gets fixed
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      06-20-2012, 11:10 PM   #18
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Just started getting P2AAF today -- WOT is a little choppy, not consistently tho
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      06-21-2012, 02:12 AM   #19
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I got the same codes as you on V301, but when i switched to V401 it doesn't show up anymore. Ran the car the same way, same temps, same pulls etc
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      10-09-2012, 08:48 PM   #20
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Any updates on this? I am getting 30FE overboost code at the track and can't figure out the cause.

Not sure why AU335i is talkin about a leak since you wouldn't be overboosting if you had a leak. Please post if you where able to solve.
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      10-09-2012, 09:45 PM   #21
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Yep, P30FE is over-boost and P30FF is under-boost.

P30FE is usually tune related. Do you have an FMIC upgrade ? You did not list this in your message?
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      10-10-2012, 12:24 AM   #22
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my CEL recently just came back on the other day. I was on 401 sport stage 1 and was on the highway. Car is an automatic and it was in either 5th or 6th and when i gunned it the car downshifted and tugged a bit then you feel it bog down and then the CEL would pop. I had switched to the 401 drive stage 1 map and the car has been perfectly fine again in any gear. So i do think this is tune related as well. My ECU is i8a0s
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