Fault Code U0129
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0129
Lost Communication With Brake System Control Module
Code U0129 indicates a critical loss of communication between the main control module and the Brake System Control Module. This can lead to severe brake failure or ABS/ESP malfunction.
Part Details
Part Name
Brake System Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪1200 - ₪6000
Engine Location
Engine compartment/Console
Symptoms
- ABS/ESP/Brake warning light illuminated
- Loss of brake control
- Brake pedal too soft or too hard
- Malfunction of safety systems
Possible Causes
- 1Severely broken or shorted wiring
- 2Loose or damaged main connector
- 3Defective Brake System Control Module
- 4Critical failure in the main control module
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