BMW 3-Series (E90 E92) Forum - View Single Post - 2009 X5 (E70) 35d: rough idle, half engine sign, and injector codes

BMWerkeUSA · 10-20-2018, 11:55 AM

Update 2:
This morning I read up on "Boost-pressure sensor, signal (003F01)" and it sounded like either I have a bad boost pressure sensor or I forgot to plug it back in after injector installation. Sure enough, it was not plugged in. I plugged it in and started the engine and now half engine sign is gone. We read the error codes with ISTA+ and deleted them. The only code we have now is the faulty daytime running light. Will go out for a drive and see how it does. The idle is still not as smooth as I would expect compared to N54/55.
I will provide another update. Thereafter I plan to summarize the DIY's, tools and software I used along with what worked for me and what did not.

Thanks

10-20-2018, 11:55 AM	#13
BMWerkeUSA Second Lieutenant 38 Rep 236 Posts Drives: 2007 760li, 2012 650i Join Date: Oct 2018 Location: South Carolina iTrader: (0)	Update 2: This morning I read up on "Boost-pressure sensor, signal (003F01)" and it sounded like either I have a bad boost pressure sensor or I forgot to plug it back in after injector installation. Sure enough, it was not plugged in. I plugged it in and started the engine and now half engine sign is gone. We read the error codes with ISTA+ and deleted them. The only code we have now is the faulty daytime running light. Will go out for a drive and see how it does. The idle is still not as smooth as I would expect compared to N54/55. I will provide another update. Thereafter I plan to summarize the DIY's, tools and software I used along with what worked for me and what did not. Thanks
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