U017BLost Communication With Restraints System Sensor L
- Generic OBD-II code · Network
- How the car detects it
- U017B means sensor L of the restraint system, the twelfth remote crash sensor in J2012 order, no longer answers. No manufacturer documents U017B publicly, so which component sits behind the letter depends on the car. One example of how sensor counts grow: airbag control units can also run pedestrian protection, fed by acceleration sensors or by a pressure tube in the front bumper. In the Bosch pressure tube system, an air-filled silicone tube in the bumper has a pressure sensor at each end, and the unit can raise an active bonnet or fire a windscreen airbag 10 to 15 ms after striking a pedestrian. Bumper replacement or a parking knock are then typical reasons for a lost sensor. The airbag or pedestrian protection warning lights; no MIL.
- What you may notice
- Airbag or pedestrian protection warning on
- Protective function assigned to sensor L disabled
- Fault appears after body or bumper work
- Likely causes
- LikelySensor or its connector not refitted after bumper replacement
- PossibleSensor or wiring damaged by a minor front or side knock
- PossibleCorroded connector in an exposed mounting position
- RareSensor L internally failed
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.