P30FE CEL after Vanos Solenoid Replacements.

mpower3o2 · 05-23-2012, 10:51 AM

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!

AU335i · 05-23-2012, 11:21 AM

boost leak code

mpower3o2 · 05-23-2012, 12:17 PM

Quote:

Originally Posted by AU335i

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

AU335i · 05-23-2012, 12:48 PM

Quote:

Originally Posted by mpower3o2

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...

mpower3o2 · 05-23-2012, 12:51 PM

Quote:

Originally Posted by AU335i

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.

AU335i · 05-23-2012, 12:53 PM

Quote:

Originally Posted by mpower3o2

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.

mpower3o2 · 05-23-2012, 12:55 PM

Quote:

Originally Posted by AU335i

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?

AU335i · 05-23-2012, 12:57 PM

Quote:

Originally Posted by mpower3o2

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?

mpower3o2 · 05-23-2012, 01:07 PM

Quote:

Originally Posted by AU335i

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.

AU335i · 05-23-2012, 01:46 PM

Quote:

Originally Posted by mpower3o2

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.

mpower3o2 · 05-23-2012, 01:53 PM

Quote:

Originally Posted by AU335i

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

AU335i · 05-23-2012, 02:27 PM

Quote:

Originally Posted by mpower3o2

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.

BMWsky · 05-23-2012, 05:29 PM

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.

mpower3o2 · 05-23-2012, 06:09 PM

Quote:

Originally Posted by BMWsky

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!

BMWsky · 05-23-2012, 08:22 PM

Quote:

Originally Posted by mpower3o2

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.

SlantedEyeXI · 06-06-2012, 02:39 PM

Quote:

Originally Posted by mpower3o2

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

benzy89 · 06-15-2012, 08:46 PM

+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

benzy89 · 06-20-2012, 11:10 PM

Just started getting P2AAF today -- WOT is a little choppy, not consistently tho

Devas · 06-21-2012, 02:12 AM

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

Razodo · 10-09-2012, 08:48 PM

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.

ken1137 · 10-09-2012, 09:45 PM

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?

scflaw · 10-10-2012, 12:24 AM

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

05-23-2012, 10:51 AM	#1
mpower3o2 Lieutenant 61 Rep 424 Posts Drives: 2017 AP M3 Join Date: Jun 2010 Location: Portland, Oregon iTrader: (6)	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
AU335i Captain 78 Rep 887 Posts Drives: 2008 335i E92 Join Date: Dec 2010 Location: Auburn, AL iTrader: (3)	boost leak code
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05-23-2012, 05:29 PM	#13
BMWsky Major 24 Rep 1,244 Posts Drives: 335i Join Date: Dec 2010 Location: Webster NY iTrader: (1)	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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06-15-2012, 08:46 PM	#17
benzy89 Banned 79 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	+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
benzy89 Banned 79 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	Just started getting P2AAF today -- WOT is a little choppy, not consistently tho
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06-21-2012, 02:12 AM	#19
Devas Second Lieutenant 14 Rep 294 Posts Drives: 2019 F82 M4 Join Date: May 2010 Location: York Region iTrader: (1)	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 __________________ COBB AP \| ETS FMIC \| ETS DownPipe \| ETS ChargePipe \| Gruppe M Ram Air Intake System \| Bilstein PSS10 Coil-Over Kit \| HRE P40
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10-09-2012, 08:48 PM	#20
Razodo Enlisted Member 0 Rep 35 Posts Drives: '08 335i Join Date: Nov 2011 Location: Miami iTrader: (0)	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
ken1137 Brigadier General 89 Rep 3,732 Posts Drives: BMW S1000XR Join Date: Jun 2011 Location: Gilbert, AZ iTrader: (7) Garage List 2009 e90 335i [6.40]	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? __________________ BMWCCA member
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10-10-2012, 12:24 AM	#22
scflaw Captain 208 Rep 741 Posts Drives: M135I, Macan S, G26 i4M50 Join Date: Jan 2011 Location: HKG iTrader: (1)	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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