# P0126 on the 2025 Mazda CX\-30

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0126

- [11006981](https://open.wenmarpro.com/bulletins/11006981), 2024-09-04: Some customers may experience a check engine light ON with DTC P0126:00 \(Thermostat stuck open\) and one or more of the following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator \(blue\) light stays on longer or turns on while driving. Poor heater performance, especially at idle.