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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Need help - CEL - N54 Shakes - CEL off again.



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      07-08-2022, 04:04 PM   #1
SonnyAsif
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Drives: BMW 335i E92
Join Date: Mar 2022
Location: United Kingdom

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Need help - CEL - N54 Shakes - CEL off again.

Hi guys.

I need some help here, I was driving normally, CEL came on and my 335i went into limp mode, CEL went off again and feels fine. I have ran DME codes and I have got these:

29CC - Combustion MF, several cylinders.
29D0 - Cylinder 4 Combustion MF.
2942 - Cylinder 6 Combustion MF.

This is where it gets confusing. I had brand new Coils and plugs put in 400 miles ago, always on top of maintenance, and a brand new DME.

I have no idea what part of the combustion is failing, because it doesn't say. Solanoids, HPFP, Injectors (I cant be fucked paying for new index 12's)

I have 84000 miles, I've always felt some misfires in the car, but I have tried pretty much everything to fix it. How do I read my CEL if it isnt on anymore also? Is there a way I can diagnose this to maybe one or two things?

Also if this is in the wrong thread, feel free to move it, this forum is a maze xD
Appreciate 0
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