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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 245 (On-Board Diagnostic - MAZDA Connect (3 Of 5)) >> DTC B1A05-2B: Front Door Speaker (RH) Audio Output Circuit Malfunction [Connectivity Master Unit] >> With Bose® and 5HB/WGN >> Outline

With Bose® and 5HB/WGN: 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 B1A05:2B (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE - WITH BOSE® AND 5HB/WGN

System malfunction location Bass-box audio output circuit malfunction
Detection condition
  • The audio amplifier detects a short circuit between the bass-box audio output circuits for 30 s.
Fail-safe Not applicable
Possible cause
  • Bass-box connector or terminal malfunction
  • Audio amplifier connector or terminal malfunction
  • Bass-box malfunction
  • Short circuit between bass-box audio output circuits
  • Audio amplifier malfunction
G13562200Courtesy of MAZDA MOTORS CORP.
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