Network, generic

U0479 Invalid Data Received From Restraints System Sensor I

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0479 records that restraints sensor I sends data the airbag controller refuses; U0178 would be silence. No public source assigns the letter I to a mounting point, and a ninth peripheral sensor is rarely documented. Rear impact sensors are one way to reach such counts: Bosch offers its peripheral acceleration sensor for installation at the back of the vehicle, and on MCI coaches service instruction ITS-60877 had a rear impact accelerometer in baggage bay three moved because luggage could trigger it. Airbag lamp on, no MIL.

Likely causes

Damaged line or connector to the sensor
Sensor disturbed by loose cargo or a poor mounting location
Internal sensor fault

Symptoms

  • Airbag warning lamp on
  • Code stored in the restraints controller

Repair estimate

DifficultyHardWorkshop job
Parts and labour€50–600
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

restraints system sensor i

Related codes

U0178U0478U047AU0452

References: bosch-mobility.com, static.nhtsa.gov.