Help diagnosing boost pressure code!

Kerr Munson · 02-13-2024, 10:36 PM

I keep getting this code. The only symptoms I have for it is on a cold start the rpm fluctuates a few times until it steadies.

I’ve already replaced the tmap with a 4 bar tmap and the map sensor twice. Any ideas? I keep getting this code. The only symptoms I have for it is on a cold start the rpm fluctuates a few times until it steadies.

I’ve already replaced the tmap with a 4 bar tmap and the map sensor twice. Any ideas?

Groganrocket · 02-14-2024, 08:05 AM

If you have after market intakes check the mass airflow sensor and your charge pipes for leaks.

02-13-2024, 10:36 PM	#1
Kerr Munson New Member 1 Rep 14 Posts Drives: 2011 335i 6mt & 2007 335i st Join Date: May 2023 Location: Austin texas iTrader: (0) Garage List 2015 BMW M4 [0.00] 2011 BMW M3 [0.00]	Help diagnosing boost pressure code! I keep getting this code. The only symptoms I have for it is on a cold start the rpm fluctuates a few times until it steadies. I’ve already replaced the tmap with a 4 bar tmap and the map sensor twice. Any ideas? I keep getting this code. The only symptoms I have for it is on a cold start the rpm fluctuates a few times until it steadies. I’ve already replaced the tmap with a 4 bar tmap and the map sensor twice. Any ideas? Attached Images
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02-14-2024, 08:05 AM	#2
Groganrocket Captain 380 Rep 985 Posts Drives: 2010 e90 335i and 2015m4 Join Date: Jun 2010 Location: NC iTrader: (0)	If you have after market intakes check the mass airflow sensor and your charge pipes for leaks.
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