Mazda TSB #SA-017-21
2020 Mazda MAZDA3
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue) light stays on longer or comes on while driving. Poor heater performance, especially at idle.