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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > N52 Fuel Injector Code



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      05-04-2021, 04:53 PM   #1
drawz
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N52 Fuel Injector Code

I'm getting a 2E31 "DME Fuel Injector Cylinder 2 Activation" code with rough running and loss of power (feels like misfiring, but don't have a code for that per se) on my 2006 330xi (N52 3-stage) with 86k miles. Initially noticed after merging on the highway with no CEL, but now occurs on cold start with a CEL. There's a fuel smell that seems to be coming from the exhaust.

It seems that N52 injector failure is fairly rare and these things are pretty expensive for new injectors ($180-200), with Genuine BMW being the only new parts available. Remanufactured ones are much less, only $35-45, but don't seem to be too reliable. I also see there are o-rings and a clip that should be replaced at the same time.

Seems that it's ok to replace just 1, but I see some advocating to replace all 6. Any thoughts on that? Anything else to check before replacing the injector(s)?
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      05-04-2021, 09:50 PM   #2
drawz
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Found VDO injectors (part # A2C3048690081) as a slightly cheaper OEM alternative for about $140.
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      05-04-2021, 11:21 PM   #3
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A used one has a higher chance of matching flow and such specs for your old injectors than a new one and it's also a way cheaper option
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      05-15-2021, 11:15 AM   #4
drawz
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Solved (replaced injector) with the saga and link to DIY documented here: https://www.e90post.com/forums/showthread.php?t=1823152
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