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BMW 3-Series (E90 E92) Forum
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30FF Fault Code
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10-25-2013, 01:25 PM | #1 |
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30FF Fault Code
Just bought an E90 335i recently and am new to the BMW scene (comin from audi) and the N54 engine.
Car is bone stock. I'm getting the 30FF code with low turbo pressure and have done some searching on possible causes.. Car has a loud rattle for about the first 30 seconds on start up that subdues eventually. Once driving, as soon as I give it some power the engine malfunction light hits and I get no power output from my turbos. So far I've come up with the waste gate actuator arm (could be the cause of the loud rattle), and checking both the hot and cool sides of compression for any leaks. Any other advice would be great. Found this DIY here and will be following it this upcoming weekend.. http://www.n54tech.com/forums/showthread.php?t=13114 Not that it's related but I also have an ambient temp sensor code (the sensor is missing) but I doubt the problems are correlated in any manner. Any input on which connections to check first and how to approach the problem are greatly appreciated, thank you. Last edited by beha; 10-25-2013 at 01:41 PM.. |
10-25-2013, 01:41 PM | #2 |
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Welcome to the BMW world
30FF can be caused by boost leaks, or boost control. when are you getting the code? post a video of the rattle so we make sure it is wastegate rattle. I'm curious. didn't you notice that rattle when you bought the car? |
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10-25-2013, 01:43 PM | #3 |
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10-25-2013, 02:37 PM | #6 |
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How many miles on the car. If excess of 50K it could just be the Vacuum Lines.
Otherwise you need to check intercooler connections, charge pipe connections and as you mentioned hot and cold side of charge pipe. Could be a leaky diverter valve. Could be wastegates sticking. |
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10-25-2013, 07:20 PM | #7 | |
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Quote:
it was hit in the driver side fender and the bumper was toast so it could've loosened up some intercooler connections. First thing im checking along with the vacuum lines. |
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10-27-2013, 01:00 AM | #8 |
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I got a bunch of 30ff codes and all same symptoms as you described.... Lucky me...got two new turbos installed courtesy of BMW NA last week. Worth looking into!!
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10-27-2013, 01:08 AM | #9 |
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I got a bunch of 30ff codes and all same symptoms as you described.... Lucky me...got two new turbos installed courtesy of BMW NA last week. Worth looking into!!
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10-28-2013, 04:19 AM | #10 | |
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Quote:
http://www.e90post.com/forums/showthread.php?t=698780 |
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10-28-2013, 02:24 PM | #11 | |
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