Thread: 2011 335i error
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      10-27-2018, 09:11 AM   #12
WiL335i
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Drives: 2011 335i Coupe Alpine White
Join Date: Jun 2011
Location: Winchester, CA

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Problem solved for 2c57

I had this 2c57 problem over just a month ago. Whenever I try to WOT or just go over 4k rpm, the car would switch over to limp mode and a CEL is displayed. So I rechecked all my connections from the charge pipe and the in/out of intercooler. It turns out that my Boost Solenoid valve was defective. My car now has over 85k miles. The part number for the Boost Solenoid is 11747626351. Very easy to replace. It's located on the passenger side of the engine just above the turbo next to the valve cover. DIY is less than 30 minutes. You'll have your boost back stronger in no time!
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