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Home >> Infiniti >> 2016 >> QX50 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Intelligent Cruise Control System (ICC) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC U0129: Brake Booster Control Unit (BCU) Can Circuit 2 Error Signal Detected >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC
(On board display)
Trouble diagnosis name DTC detecting condition Possible causes
U0129
(125)
BCU CAN CIR2 If ICC sensor integrated unit detects an error signal that is received from brake booster control unit via ITS communication Brake booster control unit
NOTE:

If DTC "U0129" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to DTC LOGIC .