U047E code meaning
Invalid Data Received From Restraints System Sensor N
What U047E means
U047E closes the sensor series: restraints sensor N still sends, but its data are rejected; U017D is lost contact, and the following codes U047F and U0480 move on to belt pretensioner modules. Fourteen external sensors is precisely the maximum Bosch states for its airbag control unit for commercial vehicles. Trucks use such satellites too: Freightliner's campaign SF682 for early 2023-2024 eCascadia replaced AB12 modules because the forward crash sensors had been left unengaged. Which sensor any maker calls N is not published. Airbag lamp on, no MIL.
U047E at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U047E
- Airbag warning lamp on
- Code stored in the restraints controller
Common causes of U047E
- PossibleCorroded connector or damaged line to the sensor
- PossibleOutdated restraints controller software or wrong sensor configuration
- Less likelyDefective satellite sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Restraints system sensor n
What each part of U047E means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7E | The exact fault in that area. |
What to do next
- Note U047E 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 U047E
What does U047E mean?
U047E means "Invalid Data Received From Restraints System Sensor N". U047E closes the sensor series: restraints sensor N still sends, but its data are rejected; U017D is lost contact, and the following codes U047F and U0480 move on to belt pretensioner modules. It is a generic code, so it means the same on every make.
Is it safe to drive with U047E?
U047E does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U047E fail an emissions test?
U047E 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 U047E to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U047E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.