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DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
DTC Display Item Malfunction detected condition Possible causes
C1138 4WAS CIRCUIT When a malfunction is detected in 4WAS system.
  • 4WAS control unit
  • ABS actuator and electric unit (control unit)
  • CAN communication line
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