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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 > Dreaded check engine light



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      06-15-2014, 06:19 PM   #1
Groganrocket
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Dreaded check engine light

Hey guys I got the reduce power engine light yesterday and then I pulled over and restarted the car and it was fine so I pulled the code and it was a 30ff under boost turbo charger. I'm wondering if I have a boost leak or the waste gate got stuck. The car never threw the code again and I tried to duplicate it and it never came back hopefully it's just a fluke. I'm running job map5 and it occurred at around 5100 rpms. Any input welcomed thanks.
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      06-16-2014, 01:04 AM   #2
The1ontop
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Same thing happened to me I was doing some pulls in 4th and 5th and I had about 6 gallons of e85 and I want to say maybe the lpfp couldn't keep up and threw the car into limp mode i dont know just a thought also hpfp could be culprit
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      06-16-2014, 06:16 PM   #3
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Quote:
Originally Posted by The1ontop View Post
Same thing happened to me I was doing some pulls in 4th and 5th and I had about 6 gallons of e85 and I want to say maybe the lpfp couldn't keep up and threw the car into limp mode i dont know just a thought also hpfp could be culprit
Hope it was just a fluke I couldn't get it to do it again car pulls hard. Thanks for the input.
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      06-16-2014, 06:32 PM   #4
grzes
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I just saw some youtube video today morning where the guy mentioned 30ff boost pressure low error. Check one of those air hoses, one might be bend or pinched, that is what he found in his car
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      06-17-2014, 04:11 PM   #5
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Quote:
Originally Posted by grzes View Post
I just saw some youtube video today morning where the guy mentioned 30ff boost pressure low error. Check one of those air hoses, one might be bend or pinched, that is what he found in his car
Thanks ill do that.
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      06-17-2014, 07:20 PM   #6
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I thought 30ff was a generic code that's trigger by other events happening first?
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      06-17-2014, 09:02 PM   #7
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Quote:
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I thought 30ff was a generic code that's trigger by other events happening first?
No it's under boost code pulled it up on the bt scan.
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      06-17-2014, 09:03 PM   #8
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Quote:
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I thought 30ff was a generic code that's trigger by other events happening first?
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