C2121No signal from tyre-pressure sensor ID1
- Toyota/Lexus code · Tyre pressure (TPMS)
- Lights a warning lamp
- How the car detects it
- The receiver doesn't hear the tyre-pressure sensor registered as ID1. Toyota numbers the sensors in the order they were registered (ID1, ID2, ...), not by wheel position, so a workshop identifies the wheel from the stored sensor IDs. Until it is fixed, check tyre pressures yourself with a gauge.
- What you may notice
- Tyre-pressure warning light blinks, then stays on
- Likely causes
- PossibleWheel without a sensor fitted (for example winter wheels)
- PossibleTyre-pressure sensor
- RareRadio interference, receiver or wiring
- Sources
Backed by at least two independent sources.
From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.