U0177Lost Communication With Restraints System Sensor H
- Generic OBD-II code · Network
- How the car detects it
- U0177 is stored when crash sensor H, the eighth remote sensor of the restraint system in J2012 lettering, stops reporting to the airbag control unit. Remote acceleration or pressure sensors detect front, side or rear impacts early and feed the central unit that decides on deployment. No manufacturer documents U0177 publicly. Chrysler's Jeep airbag list from 2006-2010 shows how the block is used, assigning U0170 to U0176 to front and side satellites, but ends before H; so U0177 only appears on vehicles with very many satellites. Siblings U0170 to U0176, U0178 and U0179 name the other sensor positions. Result: airbag warning lamp on, possibly reduced protection in one zone, no MIL. Leave airbag work to a workshop.
- What you may notice
- Airbag warning lamp on
- Impact detection in the zone of sensor H unavailable
- Code returns immediately after clearing
- Likely causes
- LikelyConnector at sensor H loose, wet or corroded
- PossibleSensor wiring damaged by trim or body work
- PossibleCrash sensor H failed
- RareAirbag control unit input faulty or wrong configuration
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.