N54 doesn't want to start

yayan54 · 07-01-2024, 04:16 AM

Hi guys I need help with my n54 single turbo . My injectors 1 and 6 wasn’t firing . I sent the Ecu and case away and the faults was on the mosfets. They repaired it and upgraded the mosfets . I tried to start it and it turns over and fires but no starts the error codes that I’m got using insta were 2D2B : DME INTAKE MANIFOLD PRESSURE SONSOR ,OVERUN and 2FBE DME FUEL PRESSURE AFTER ENGINE STOP . What could be wrong or cause it not to start any help will be appreciated ?

swellengear · 07-01-2024, 08:35 AM

Check your MAP sensor, and its wiring. If you're running a JB4, might be worthwhile to check your user settings.

As an afterthought, seeing as your ECU was out, verify that all its plugs are seated correctly.

Hopefully it's something as simple as that!

yayan54 · 07-01-2024, 08:37 AM

Thanks I am running jb4 but it hasn’t been connected you think I must connect it and see ?

07-01-2024, 04:16 AM	#1
yayan54 Registered 0 Rep 4 Posts Drives: 323i and 335i e90 Join Date: Jun 2024 Location: south africa iTrader: (0)	N54 doesn't want to start Hi guys I need help with my n54 single turbo . My injectors 1 and 6 wasn’t firing . I sent the Ecu and case away and the faults was on the mosfets. They repaired it and upgraded the mosfets . I tried to start it and it turns over and fires but no starts the error codes that I’m got using insta were 2D2B : DME INTAKE MANIFOLD PRESSURE SONSOR ,OVERUN and 2FBE DME FUEL PRESSURE AFTER ENGINE STOP . What could be wrong or cause it not to start any help will be appreciated ? Attached Images
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07-01-2024, 08:35 AM	#2
swellengear Private 146 Rep 89 Posts Drives: 2008 135i Join Date: Feb 2023 Location: Swellendam, South Aftica iTrader: (0)	Check your MAP sensor, and its wiring. If you're running a JB4, might be worthwhile to check your user settings. As an afterthought, seeing as your ECU was out, verify that all its plugs are seated correctly. Hopefully it's something as simple as that!
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07-01-2024, 08:37 AM	#3
yayan54 Registered 0 Rep 4 Posts Drives: 323i and 335i e90 Join Date: Jun 2024 Location: south africa iTrader: (0)	Thanks I am running jb4 but it hasn’t been connected you think I must connect it and see ?
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