DTC U0162-00: Communication Error With Center Display [Connectivity Master Unit]: Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0162:00 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with center display
Detection condition	When any of the following conditions is met. The connectivity master unit (CMU) detects the same malfunction 3 times or more continuously from the following items during communication between the center display and connectivity master unit (CMU). Connector connection malfunction Open circuit in signal circuit Center display malfunction Connectivity master unit (CMU) malfunction The connectivity master unit (CMU) detects that it cannot communicate with the center display 3 times or more continuously within the specified time. The connectivity master unit (CMU) receives an error signal from the center display 3 times or more continuously within the specified time. When the connectivity master unit (CMU) requests a center display status verification signal, it cannot receive it 3 times or more continuously.
Fail-safe	Image not output
Possible cause	Center display connector or terminal malfunction Short to ground or open circuit in center display power supply circuit (B+) Open circuit in center display ground circuit Short to ground or open circuit in center display power supply circuit (ACC) Malfunction in connectivity master unit (CMU) connector or terminal Short to power supply, short to ground or open circuit in center display signal circuit Center display signal circuit shield wire malfunction Center display malfunction Connectivity master unit (CMU) malfunction
Courtesy of MAZDA MOTORS CORP.