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      02-18-2019, 11:02 AM   #1
JacobND
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Drives: 2012 BMW 135i
Join Date: Feb 2019
Location: NJ

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N55 - Cat and evap code issues

Hello,

My 2012 N55 is throwing 3 codes and 2 shadow codes.

After clearing, I drive until Catalyst completes its scan and it throws 3106 (cat efficiency below limit).

Then, after driving a few hundred miles the evap system completes it's check and I get 2BEA (mixture control: fuel-air mixture too lean, large deviation.) and 2BF8 (Rail pressure sensor, signal: permanently stuck).

The shadow codes are 2BDE (fuel high pressure on enabling of injection) and 2BF0 which are both activated with evap system.

I looked up each code individually and found the following:

- 3106 is common for custom maps or aftermarket downpipes (I don't think I have either but cannot be sure about the map because I am not the first owner)

-2BEA can be due to the HPFP being bad (but not always)

-2BF8 usually means replace high pressure sensor on fuel rail


One thing for certain is that I don't want to just go around fixing everything if they are all related. The reason I am posting is because I am looking for some insight on the codes all together. Does anyone know if there is one thing which would cause all of these codes?
Appreciate 0
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135i, 2bde, 2bea, 2bf0, 2bf8, 3106, catalyst, evap, n55

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