U047CInvalid Data Received From Restraints System Sensor L
- Generic OBD-II code · Network
- How the car detects it
- U047C sets when restraints sensor L still communicates but delivers unusable data; U017B is the lost-contact partner. L is the twelfth sensor letter, and twelve is exactly the number of PSI5 sensor interfaces Bosch quotes for its standard airbag control unit; more requires the premium version. No carmaker publishes what sits behind L. PSI5 frames carry a parity bit or a short CRC, so a corrupted telegram is caught before its value reaches the crash algorithm. Airbag lamp on, no MIL.
- What you may notice
- Airbag warning lamp on
- Code stored in the restraints controller
- Likely causes
- PossibleDamaged shielding or twisted pair causing checksum errors
- PossibleDefective satellite sensor
- RareController coding not matching the sensor equipment
- 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.