BMW 3-Series (E90 E92) Forum - View Single Post - JB+ and got "Service Engine Soon" light...

Driver72 · 06-20-2009, 11:39 AM

Yes, have it scanned before taking it in.
If you run 91 Octane, JB+ should be at default (50%) setting.

If it's a misfire on the same cylinder I'd guess faulty plug or faulty fuel injector.

A dealer service is required.

06-20-2009, 11:39 AM	#7
Driver72 Brigadier General 330 Rep 4,484 Posts Drives: 335i - to new owners now. Join Date: Dec 2006 Location: California iTrader: (0)	Yes, have it scanned before taking it in. If you run 91 Octane, JB+ should be at default (50%) setting. If it's a misfire on the same cylinder I'd guess faulty plug or faulty fuel injector. A dealer service is required.
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