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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2245 (Audio, Visual, Navigation System (BOSE Audio Without Navigation)) >> DTC/Circuit Diagnosis >> DTC U1256: Hand Free Conn >> Description
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DTC U1256: Hand Free Conn: Description

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

U1256 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simultaneously, without fail, with the malfunction of control units connected to AV control unit with communication line. Determine the possible malfunction cause from the table below.

Self-diagnosis results display item

DTC Display contents of CONSULT DTC Detection Condition Possible causes
U1256
  • HAND FREE CONN [U1256]
  • Bluetooth control unit power supply and ground circuit malfunction is detected
  • A malfunction is detected in communication circuit between AV control unit and Bluetooth control unit
  • A malfunction is detected in communication signal between AV control unit and Bluetooth control unit
  • Bluetooth control unit power supply and ground circuits
  • Communication circuit between AV control unit and Bluetooth control unit