Thread: BMW Fault Code
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      01-05-2012, 10:50 PM   #1
C|3R1C
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Drives: 2010 E93 M3 DCT
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BMW Fault Code

So my E93 M3 currently throws up an engine malfunction after about 1 minute of driving. This engine malfunction is the 4k RPM limit and practically 0 power.

I used a BT cable and got the codes:

27E4
Underpressure pump Mastervac plausibility
Error will cause a warning light
Error is currently present

2789 and 278A, which are catalytic converter conversion bank 1 and bank 2, respectively, but I think those are just for the increased emissions.

Also got the codes for the engine malfunction too.

I am wondering what exactly is this.

List of mods I have: AA Tune, AA Power Pulley, AA HFC, and AA Catback.

Thank you in advance for all the help
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