U0473 code meaning
Invalid Data Received From Restraints System Sensor C
What U0473 means
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.
U0473 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.8 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0473
- Airbag warning lamp on
- Left side and curtain airbag readiness uncertain
Common causes of U0473
- Most likelySensor wire pinched or chafed under the B-pillar or sill trim
- PossibleSide sensor loose because a stud, nut or screw is missing
- Less likelySensor damaged by a previous side impact
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Restraints system sensor c
What each part of U0473 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 73 | The exact fault in that area. |
What to do next
- Note U0473 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0473
What does U0473 mean?
U0473 means "Invalid Data Received From Restraints System Sensor C". U0473 means the restraints controller receives sensor C but cannot use what it sends. It is a generic code, so it means the same on every make.
Is it safe to drive with U0473?
U0473 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0473 fail an emissions test?
U0473 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0473 to fix?
Difficulty: hard. A typical repair takes 0.8 to 2.5 hours of work. This is a job for a workshop.
Will U0473 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.