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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions NEW CEL HELP!

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      05-28-2025, 07:55 AM   #1
WellsStrength
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NEW CEL HELP!

Anybody have any idea what would be throwing this code? Just happened as I was casually cruising, no issues prior, reset the code it comes right back…
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Stock 18’ BMW M550i, waiting for dragy to get here and make some runs to determine which tune I want to maintain everyday driver status while adding hp and tq without killing mpg. Leaning towards JB4…
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      05-28-2025, 01:24 PM   #2
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It's either a turbo issue causing too rich and lean gas/air mix issues, or whatever is causing the gas issues is shutting down the turbo's.

Codes indicate pressure issue, turbo issue and gas rich/lean issues. Wish I could not be more helpful, turbo's do go on these cars.
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      05-28-2025, 01:51 PM   #3
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Can we get BMW specific codes? These are kinda useless.
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      05-28-2025, 02:07 PM   #4
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Quote:
Originally Posted by lnxguy View Post
Can we get BMW specific codes? These are kinda useless.
These are the only codes that I have, they are off BM3 app.

Has happened twice and only happens when I come to a stop or slow down for a stop.

I do have the xHP tune as well, I was thinking maybe the shift maps were causing too high of a load % and causing it to be rich… idk I could be way off.
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Stock 18’ BMW M550i, waiting for dragy to get here and make some runs to determine which tune I want to maintain everyday driver status while adding hp and tq without killing mpg. Leaning towards JB4…
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      05-28-2025, 05:00 PM   #5
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They look like BMW hex codes to me. Have you entered them at the BMW faulte code site…select your ECU variant…then click the VIEW link to see if there’s any additional info for cause or service plan:

https://bmwfault.codes/Lookup
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      05-28-2025, 09:28 PM   #6
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Well… I found the issue. The plug for the optional WMI worked its way out causing a boost leak. My initial inspection was on the way to work and I didn’t catch it, tonight I looked it over again and seen it… wide open. Got it plugged back up.
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