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BMW U2102 Code – MOST Bus Timeout
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 U2102 appears when communication timeout occurs on MOST bus modules.
What This Code means on the Vehicles
Timeout error between modules on BMW-specific network.
Why This is different from a generic OBD2 Code
Standard OBD-II scanners cannot detect module timeout on MOST bus.
Common Situations That Trigger This Code
Wiring harness damage; Module failure; Firmware mismatch.
What Will NOT Fix This Code
Ignoring bus timeout; Replacing unrelated parts.
How to Clear This Code on Vehicles
Inspect wiring, modules; clear via BMW ISTA/OEM tool.
Related Manufacturer Specific Codes
BMW U2100; BMW U2101
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