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U0431 Network

Invalid Data Received from Body Control Module

Other modules receive implausible body status data (e.g. all doors reported closed while ajar). Comfort and lighting features can behave inconsistently.

Affected components

  • Body control module

Common causes

  • Medium likelihood: BCM software version mismatch
  • Low likelihood: Gateway module routing CAN messages incorrectly
  • Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec

Possible symptoms

  • Multiple warning lights may illuminate
  • Affected modules may go into limp mode or shut down
  • Specific functions inoperative depending on module
  • Diagnostic tools may show communication faults

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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