Tag
#BCM
3 posts in Car Diagnostics blog about "BCM" — OBD-II diagnostics, DTC codes, repair. ← All posts
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B1000 and friends: reading body control codes without guessing
B-codes cover airbags, locks, lighting and climate, and they are almost entirely manufacturer-specific. Knowing that changes how you read them and what tool you need.
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U0140 and U0155: lost communication with the body module and cluster
These two codes sit on the comfort side of the network, where symptoms look like unrelated electrical gremlins: dead windows, wrong gauges, lights that will not switch off.
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BCM (Body Control Module): diagnosing "window won't work" and "key not detected" via OBD
What BCM does, how OBD-II reads B-codes and U-codes, why "the window is stuck from pause" is often the BCM, and how to tell the module from a wiring fault.