Check engine light on with DTC P0126:00 and engine running cooler than normal / poor heater performance /...
Mazda technical service bulletin SA-017-21a for 2018-2020 Mazda MAZDA3, 2018-2020 Mazda CX-5 and 2018-2020 Mazda MAZDA6 and others.
- Bulletin number
- SA-017-21a
- Component
- Equipment
- Summary
- CHECK ENGINE LIGHT ON WITH DTC P0126:00 AND ENGINE RUNNING COOLER THAN NORMAL / POOR HEATER PERFORMANCE / LOW ENGINE COOLANT TEMPERATURE (BLUE) LIGHT ON: 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.
Vehicles covered
- Mazda MAZDA3 2018-2020 201820192020
- Mazda CX-5 2018-2020 201820192020
- Mazda MAZDA6 2018-2020 201820192020
- Mazda CX-30 2020 2020
- Mazda CX-3 2019-2020 20192020
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