U013FLost Communication With Pedestrian Alert Control Module
- Generic OBD-II code · Network
- How the car detects it
- U013F reports that the pedestrian alert control module has gone silent. Electric and hybrid cars need it to produce a warning sound at low speed, because they are otherwise almost inaudible; FMVSS 141 in the US and UN R138 in Europe make such a sound mandatory. GM describes the system on the 2022 BrightDrop EV600: the module creates a tone whose pitch and volume follow the vehicle's speed, plays it through one front and one rear speaker below 30 km/h whenever a driving gear, forward or reverse, is engaged, and is driven by the BCM over LIN. No manufacturer explains U013F itself in public. Circuit faults of the module appear as P0DED to P0DEF. The car drives normally, but pedestrians may not hear it, so the fault deserves a prompt repair.
- What you may notice
- No warning sound when driving slowly
- Pedestrian alert fault message in the cluster
- Likely causes
- LikelyWater or corrosion at the module, a speaker or their connectors
- PossibleSupply, ground or LIN/CAN wiring of the module faulty
- RarePedestrian alert control module internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.