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B0455

Display Module Internal Failure

The instrument cluster or central display module reports an internal self-test failure. Pixels may be missing, the screen may stay dark, or warning indicators may not display correctly.

  • Check engine light: Not always
  • 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.

  • Display module internal faultCommon
  • Power supply or ground faultPossible

Parts involved

  • Display Module
  • Instrument Cluster

B0455 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.