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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 > P054B Code



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      03-20-2016, 11:59 AM   #1
Dalbmw
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P054B Code

Posted this in the E90 forum, but also posting here for more exposure as I'd like to get this fixed before Monday.

I just replace my OFHG using the DIY on this site. I also replace the serpentine belt, belt tensioner, & idler pulleys. Now when I fire the car up I get code P054B along with a CEL & rough idle.

Any thoughts on what could be wrong? I've double checked all electrical connections. Any help is appreciated!

2011 E90 335i N55
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      03-20-2016, 01:16 PM   #2
BayMoWe335
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Vanos solenoids.
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      03-20-2016, 02:02 PM   #3
vsix
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EGR?
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      03-20-2016, 02:08 PM   #4
Dalbmw
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I cleaned and swapped the vanos solenoids (intake & exhaust), now I get P052B & P054B You think the solenoids need to be replaced? It's just weird that they would go out after working on the car.

Thanks!
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