U017DLost Communication With Restraints System Sensor N
- Generic OBD-II code · Network
- How the car detects it
- U017D concerns restraint sensor N, the last of the fourteen sensor letters A to N; the two codes that follow belong to seat belt pretensioner modules. No manufacturer documents U017D publicly, and the Chrysler Jeep tables in NHTSA file PE11-019 never go past G. Bosch scales its premium airbag units to as many as 18 sensor inputs, so a fourteenth satellite is possible but rare. Most such sensors talk PSI5, an open interface developed from Autoliv, Bosch and Continental designs that sends Manchester-coded current pulses at 125 kbit/s over a twisted pair. That pair carries supply and data together, so a wiring repair must keep the twist and use approved crimp connectors. U047E is the invalid-data counterpart. Airbag lamp on, no MIL.
- What you may notice
- Airbag warning lamp on
- Scan tool reports no response from sensor N
- Restraint deployment relying on sensor N may be disabled
- Likely causes
- LikelyConnector at sensor N loose or corroded
- PossibleEarlier wiring repair untwisted or with unsuitable connectors
- PossibleCrash sensor N failed
- RareAirbag unit expects a sensor N that is not installed
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.