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B0123

Pedestrian Alert Speaker B

Fault on pedestrian alert speaker B (second/redundant speaker).

  • Check engine light: Yes
  • Emissions related: No
  • Repair difficulty: medium

Symptoms

  • Warning light or symbol related to the affected system
  • Comfort or safety function impaired

Common causes

Ordered by how often each turns out to be the cause.

  • Speaker coil openCommon

Parts involved

  • Pedestrian Alert Speaker B
  • Speaker Wiring

B0123 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.