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BMW U2101 Code – MOST Bus Invalid Data
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
BMW U2101 shows when one module reports invalid data to MOST bus.
What This Code means on the Vehicles
Invalid module data on BMW MOST bus.
Why This is different from a generic OBD2 Code
Generic scanners cannot detect MOST bus invalid data issues.
Common Situations That Trigger This Code
Faulty module; Wiring damage; Aftermarket device interference.
What Will NOT Fix This Code
Replacing unrelated modules.
How to Clear This Code on Vehicles
Diagnose module and wiring; clear via ISTA.
Related Manufacturer Specific Codes
BMW U2100; BMW U2102
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