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BMW P2401 Code – EVAP Large Leak Detected
Limited
Safe to drive :
BMW vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to other brands.
Medium
Severity level :
When Does This Code Appear on the Vehicles
P2401 occurs when EVAP system detects large leak in vapor lines.
What This Code means on the Vehicles
BMW-specific EVAP large leak detected.
Why This is different from a generic OBD2 Code
Generic scanners report EVAP leak but cannot differentiate leak size for BMW.
Common Situations That Trigger This Code
Loose gas cap; Hose disconnected; Canister cracked.
What Will NOT Fix This Code
Replacing unrelated parts; Ignoring canister and hose connections.
How to Clear This Code on Vehicles
Inspect hoses and canister; perform BMW-specific leak test; clear via ISTA.
Related Manufacturer Specific Codes
BMW P2400; BMW P2402
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