Network, generic

U0473 Invalid Data Received From Restraints System Sensor C

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0473 means the restraints controller receives sensor C but cannot use what it sends. In Chrysler's lists from investigation PE11-019, C is the first left-side satellite acceleration sensor, present already on the four-sensor Wrangler JK; its internal fault is B1B72, while U0172 covers lost contact. On later Jeeps such a side sensor sits in the B-pillar: FCA's STAR case S2108000269 for the 2022 Wrangler answers a B-pillar side impact sensor short (B2761-11) with a check for pinched wiring at the seat belt retractor bracket. Ford's program 22H05 had 2021 Bronco side sensors checked for a missing retaining stud on the B-pillar. A side sensor that delivers bad data can delay the left seat and curtain airbags. Airbag lamp on, no MIL.

Likely causes

Sensor wire pinched or chafed under the B-pillar or sill trim
Side sensor loose because a stud, nut or screw is missing
Sensor damaged by a previous side impact

Symptoms

  • Airbag warning lamp on
  • Left side and curtain airbag readiness uncertain

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–500
Time0.8–2.5 h

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

Parts involved

restraints system sensor c

Related codes

U0172U0474U0476U0452

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.