Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or...
Mazda technical service bulletin 01-005-24 for 2019-2024 Mazda MAZDA3, 2018-2024 Mazda CX-5 and 2018-2021 Mazda MAZDA6 and others.
- Bulletin number
- 01-005-24
- Component
- Engine
- Summary
- 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. NOTE: Vehicles with SKYACTIV-G 2.5T are not applicable to this service information. If DTC P2B61:00 (Coolant control valve circuit range/performance) accompanies DTC P0126:00, this TSB is not applicable. Diagnose DTCs according to the instructions on MGSS online.
Owners of these vehicles have filed 605 complaints in the engine category.
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