Mazda TSB #SA-035-20a
2018 Mazda MAZDA6
TSB Document:
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.
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