If you suspect fuel delivery problems, drive down to zero DTE. If the pump or siphon or fuel pressure regulator or fuel filter are at fault you will starve of fuel when there is 20-70 miles DTE. If you can drive down to single digits all those items can be eliminated (save some crazy intermittent issue).

There are a few parts other than the dtml for atmospheric venting without letting fuel vapors loose. From my understanding it's the other components that fail that will cause this error code. The pump pressurizes the fuel tank. If the pressure doesn't hold there is a leak somewhere. You may be able to find simply by sniffing.

There is a filter to allow venting from heat there is a valve to close the system there is valve that closes if you flip your car upside down. Look at real OEM and trace all the parts in the fuel supply. If when you open the gas cap you don't get the whoosh there is a leak. If you do get it you may just have a loose wire.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)