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Home >> Infiniti >> 2009 >> EX35 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Automatic Drive Positioner) >> Component Diagnosis >> DTC B2128: UART Communication Line >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2128 UART COMM The communication between driver seat control unit and auto drive positioner control unit is interrupted for a period of time.
  • UART communication line (UART communication line is open or shorted)
  • Driver seat control unit
  • Automatic drive positioner control unit
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