U047DInvalid Data Received From Restraints System Sensor M
- Generic OBD-II code · Network
- How the car detects it
- U047D reports invalid data from restraints sensor M; U017C is lost contact. A thirteenth satellite exceeds the twelve sensor interfaces of Bosch's standard airbag control unit, so a system using M needs a larger controller such as Bosch's AB premium with up to 18. No manufacturer discloses which component is M. The fault lies in content, not in the link: a wrong sensor variant, a damaged sensor or controller software that misreads the data are typical suspects. Airbag lamp on, no MIL.
- What you may notice
- Airbag warning lamp on
- Code stored in the restraints controller
- Likely causes
- PossibleSensor variant not matching the vehicle configuration
- PossibleDamaged satellite sensor
- RareRestraints controller software misinterpreting the sensor data
- Repair
- Hard · Usually a job for a workshop.Typical cost: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.