U0127Lost Communication With Tire Pressure Monitor Module
- Generic OBD-II code · Network
- How the car detects it
- U0127 is logged when the tyre pressure monitoring module, the receiver that collects the radio signals of the wheel sensors, stops answering on the vehicle network. In the VW group the gateway (address 0019) stores it: Audi bulletin 2065474 for A6/A7/RS 6/RS 7 2019–2022 finds the module J502 unreachable and blames moisture entering through its pressure equalisation element; the fix is a new module and bracket. Bentley 2057947 (Continental GT, Flying Spur) shows the same pattern, as static or intermittent fault. Faulty wheel sensors set other codes such as U0430 instead. Only the TPMS warning lights; engine and brakes are unaffected, no MIL.
- What you may notice
- TPMS warning lamp or message in the cluster
- Tyre pressures not displayed
- Scan tool cannot reach the TPMS module
- Likely causes
- LikelyMoisture inside the TPMS module through its vent element
- PossiblePins, power or ground at the TPMS module connector faulty
- RareDamaged bus wiring to the module
- Repair
- Medium · 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.