Code Definition

B2203 — CD-ROM Error

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B2203

B2203 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B2203 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The B2203 code indicates that the CD ROM drive within the navigation or entertainment head unit has reported an error during operation. The CD ROM mechanism is used in older generation navigation systems to read the map data disc, and in entertainment head units to play audio CDs and software discs. The code is set when the head unit detects a read failure, mechanical fault, or self test failure in the CD ROM assembly, such as the laser pickup failing to focus, the disc tray failing to seek correctly, or repeated read errors on a known good disc. When this code is set the driver may notice los...

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