Need suggestion on what could be wrong

Pweeskii · 01-15-2025, 07:41 AM

Need some input please…Car threw up a “P0300, P0304,305,306” meaning random misfire, I have changed all my spark plugs and coils. Also the MAF sensor just in case, car still will not start, anybody can point me in the right direction?

(2016 M235i )

ferraricare · 01-15-2025, 06:37 PM

So many possibilities: how did it get to this point? Clear codes and retry to start and then recheck codes. Any other codes?

Pweeskii · 01-15-2025, 07:02 PM

ferraricare only thing that lead up to it was occasionally when I’d be parked idle it would die out briefly then kick back on. Just recently it turned into a rough idle then no start. If I try to start it turns like it wants to start but never turns over.

BringBackButtons · 01-16-2025, 10:52 AM

What does your hpfp readings say?

If not that, then injectors would be my next diagnosis or vanos solenoids

01-15-2025, 07:41 AM	#1
Pweeskii Registered 0 Rep 3 Posts Drives: 2016 BMW M235i Xdrive Join Date: Sep 2024 Location: Chicago iTrader: (0)	Need suggestion on what could be wrong Need some input please…Car threw up a “P0300, P0304,305,306” meaning random misfire, I have changed all my spark plugs and coils. Also the MAF sensor just in case, car still will not start, anybody can point me in the right direction? (2016 M235i ) Attached Images
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01-15-2025, 06:37 PM	#2
ferraricare Euro Car Enthusiast 68 Rep 88 Posts Drives: 2016 M235i Join Date: Jul 2016 Location: Sacramento, CA iTrader: (0) Garage List 2016 M235i [0.00]	Missfires So many possibilities: how did it get to this point? Clear codes and retry to start and then recheck codes. Any other codes?
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01-15-2025, 07:02 PM	#3
Pweeskii Registered 0 Rep 3 Posts Drives: 2016 BMW M235i Xdrive Join Date: Sep 2024 Location: Chicago iTrader: (0)	ferraricare only thing that lead up to it was occasionally when I’d be parked idle it would die out briefly then kick back on. Just recently it turned into a rough idle then no start. If I try to start it turns like it wants to start but never turns over.
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01-16-2025, 10:52 AM	#4
BringBackButtons Smart Enough to Scan for Codes First 134 Rep 322 Posts Drives: F23 M235i 6MT Join Date: Jun 2024 Location: North Dakota iTrader: (0)	What does your hpfp readings say? If not that, then injectors would be my next diagnosis or vanos solenoids Last edited by BringBackButtons; 01-16-2025 at 10:53 AM..
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