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U047A: Invalid Data Received From Restraints System Sensor J

Standardized SAE J2012 code · U04xx — Invalid data received

What does U047A mean?

A receiving module detected implausible data from restraints system sensor J (satellite crash sensor). Acceleration profile values fail plausibility checks against other crash sensors and are rejected.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

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

Common causes

  • High Module internal fault or sensor input drift
  • Medium Software version mismatch after replacement
  • Low Gateway module routing CAN messages incorrectly

Likelihood is a general estimate across vehicles; your make and model may differ.

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