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30ff
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BMW · SUVs
Boost Pressure Too Low During Acceleration
Quick Answer
Error code 30FF on your BMW SUVs means: Boost Pressure Too Low During Acceleration. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
X1 M35i 2024X1 xDrive28i 2024X3 M 2024X3 M40i 2024X3 xDrive30i 2024X5 M 2024X5 M60i 2024X5 xDrive40i 2024X5 xDrive50e 2024X6 M 2024X6 M60i 2024X6 xDrive40i 2024X7 M60i 2024X7 xDrive40i 2024iX M60 2024iX xDrive50 2024X1X3 MX3X5 MX5X6X7iX
Likely Causes
  1. Leaking or disconnected charge pipe (intercooler pipe)
  2. Failing turbocharger wastegate actuator
  3. Cracked intercooler or boost hose
  4. Faulty boost pressure sensor
  5. Turbocharger bearing wear causing reduced boost output
How to Fix It
1
Inspect all charge pipes and intercooler hoses for cracks, disconnections, or loose clamps
2
Perform a boost leak test to identify pressure loss points
3
Check wastegate actuator operation and linkage for proper movement
4
Test the boost pressure sensor with a scan tool and compare to actual boost
5
Inspect the turbocharger for shaft play or bearing wear and replace if necessary
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Charge pipe (intercooler pipe)
Boost hose clamps
Boost pressure sensor
Wastegate actuator
Turbocharger assembly
Related Error Codes
P0171P0174P0300P0301P0335
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