U0472 code meaning
Invalid Data Received From Restraints System Sensor B
What U0472 means
U0472 points to restraints sensor B: the airbag controller hears it but discards the transmitted values as corrupt or implausible, whereas U0171 would mean silence. Chrysler's NHTSA filing PE11-019 lists sensor B as the right-hand up-front satellite measuring acceleration on its 2007-2008 Jeep models, paired with internal fault B1B71. Front satellites of this kind sit in the crumple zone, where they notice a frontal crash earlier than the central unit. How much depends on their mounting is shown by Land Rover recall N685 for the 2022 Range Rover: front crash sensors fastened below the specified torque could work loose, feed the restraints system wrong information and even cause an unwanted frontal airbag deployment. Expect the airbag warning lamp; no MIL.
U0472 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0472
- Airbag warning lamp on
- Frontal crash detection possibly degraded until repair
Common causes of U0472
- Most likelyFront sensor not tightened to specification or loosened after body repair
- PossibleChafed or corroded harness between front sensor and airbag controller
- Less likelyMeasuring element of the right front satellite defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Restraints system sensor b
What each part of U0472 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 72 | The exact fault in that area. |
What to do next
- Note U0472 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 U0472
What does U0472 mean?
U0472 means "Invalid Data Received From Restraints System Sensor B". U0472 points to restraints sensor B: the airbag controller hears it but discards the transmitted values as corrupt or implausible, whereas U0171 would mean silence. It is a generic code, so it means the same on every make.
Is it safe to drive with U0472?
U0472 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0472 fail an emissions test?
U0472 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 U0472 to fix?
Difficulty: hard. A typical repair takes 0.5 to 1.5 hours of work. This is a job for a workshop.
Will U0472 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.