Is this supposed to sound like this?

[1000hp]

Rodent damage

[FattyF80]

Originally Posted by jfritz27

I'd use Bimmerlink and pull the individual codes, see what you're dealing with and go from there.

And please share this car's backstory.

12 Motor electronics
18 errors
121001: Boost pressure sensor, electrical: short circuit to positive CD8F01: LIN, communication (intelligent battery sensor): missing
1
120408: Boost pressure control: shutdown as a follow-up reaction 150102: Ignition, cylinder 1: burning time too short
102A01: Air mass meter, signal: electrical fault
102A11: Air mass meter 2, signal: electrical fault
140010: Misfire, multiple cylinders: detected
140110: Misfire, cylinder 1: detected
140001: Misfiring, multiple cylinders: Injection is switched off
140101: Misfire, cylinder 1: Injection is switched off
102001: Air mass, plausibility: air mass too high
102901: Air mass 2, plausibility: air mass too high
102E11: Air mass meter: electrical fault or air mass implausible
140002: Misfiring, multiple cylinders: harmful to exhaust gas after starting 140102: Misfiring, cylinder 1: harmful to exhaust gas after starting 215109: Battery, battery electronics: defective
121201: Boost pressure sensor, plausibility, overrun: pressure too high 138104: Exhaust flap actuator, signal line: open

[M3inthecity]

Originally Posted by FattyF80

12 Motor electronics
18 errors
121001: Boost pressure sensor, electrical: short circuit to positive CD8F01: LIN, communication (intelligent battery sensor): missing
1
120408: Boost pressure control: shutdown as a follow-up reaction 150102: Ignition, cylinder 1: burning time too short
102A01: Air mass meter, signal: electrical fault
102A11: Air mass meter 2, signal: electrical fault
140010: Misfire, multiple cylinders: detected
140110: Misfire, cylinder 1: detected
140001: Misfiring, multiple cylinders: Injection is switched off
140101: Misfire, cylinder 1: Injection is switched off
102001: Air mass, plausibility: air mass too high
102901: Air mass 2, plausibility: air mass too high
102E11: Air mass meter: electrical fault or air mass implausible
140002: Misfiring, multiple cylinders: harmful to exhaust gas after starting 140102: Misfiring, cylinder 1: harmful to exhaust gas after starting 215109: Battery, battery electronics: defective
121201: Boost pressure sensor, plausibility, overrun: pressure too high 138104: Exhaust flap actuator, signal line: open

Ever figure out what was wrong? I’m going thru same issue

[FattyF80]

Originally Posted by M3inthecity

Ever figure out what was wrong? I’m going thru same issue

Yep fixed it a longggg time ago dm me what code specifically coming up