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P30FE CEL after Vanos Solenoid Replacements.
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05-23-2012, 10:51 AM | #1 |
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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! |
05-23-2012, 12:17 PM | #3 |
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05-23-2012, 12:48 PM | #4 |
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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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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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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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05-23-2012, 12:57 PM | #8 |
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05-23-2012, 01:07 PM | #9 |
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05-23-2012, 01:46 PM | #10 |
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05-23-2012, 01:53 PM | #11 |
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05-23-2012, 02:27 PM | #12 | |
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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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05-23-2012, 08:22 PM | #15 |
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06-06-2012, 02:39 PM | #16 | |
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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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Drives: '08 E90 335i
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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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